diff --git a/headers/os/app/Roster.h b/headers/os/app/Roster.h
index c63a068bb3..04a78163b4 100644
--- a/headers/os/app/Roster.h
+++ b/headers/os/app/Roster.h
@@ -39,17 +39,6 @@ class BList;
 class BMessage;
 class BNodeInfo;
 
-// TODO: relocate these private prototypes
-extern "C" int	_init_roster_();
-extern "C" int	_delete_roster_();
-status_t _send_to_roster_(BMessage *message, BMessage *reply, bool mime);
-bool _is_valid_roster_mess_(bool mime);
-
-namespace BPrivate {
-	void init_registrar_roster(BMessenger mainMessenger,
-							   BMessenger mimeMessenger);
-}
-
 /*-------------------------------------------------------------*/
 /* --------- app_info Struct and Values ------------------------ */
 
@@ -149,15 +138,10 @@ public:
 							const char *appSig = NULL) const;
 		
 /*----- Private or reserved ------------------------------*/
+	class Private;
+
 private:
-	friend class BApplication;
-	friend class BWindow;
-	friend class _BAppCleanup_;
-	friend int	_init_roster_();
-	friend status_t _send_to_roster_(BMessage *, BMessage *, bool);
-	friend bool _is_valid_roster_mess_(bool);
-	friend void BPrivate::init_registrar_roster(BMessenger, BMessenger);
-	friend class GetRecentTester;
+	friend class Private;
 
 	class ArgVector;
 
diff --git a/headers/private/app/RosterPrivate.h b/headers/private/app/RosterPrivate.h
new file mode 100644
index 0000000000..031b5aca32
--- /dev/null
+++ b/headers/private/app/RosterPrivate.h
@@ -0,0 +1,73 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//---------------------------------------------------------------------
+
+#ifndef _ROSTER_PRIVATE_H
+#define _ROSTER_PRIVATE_H
+
+#include <Messenger.h>
+#include <Roster.h>
+
+class BRoster::Private {
+public:
+	Private() : fRoster(const_cast<BRoster*>(be_roster)) {}
+	Private(BRoster &roster) : fRoster(&roster) {}
+	Private(BRoster *roster) : fRoster(roster) {}
+
+	void SetTo(BMessenger mainMessenger, BMessenger mimeMessenger);
+
+	status_t SendTo(BMessage *message, BMessage *reply, bool mime);
+	bool IsMessengerValid(bool mime) const;
+
+	// needed by BApplication
+
+	status_t AddApplication(const char *mimeSig, const entry_ref *ref,
+							uint32 flags, team_id team, thread_id thread,
+							port_id port, bool fullReg, uint32 *token,
+							team_id *otherTeam) const
+		{ return fRoster->AddApplication(mimeSig, ref, flags, team, thread,
+										 port, fullReg, token, otherTeam); }
+
+	status_t SetSignature(team_id team, const char *mimeSig) const
+		{ return fRoster->SetSignature(team, mimeSig); }
+
+	status_t CompleteRegistration(team_id team, thread_id thread,
+								  port_id port) const
+		{ return fRoster->CompleteRegistration(team, thread, port); }
+
+	bool IsAppPreRegistered(const entry_ref *ref, team_id team,
+							app_info *info) const
+		{ return fRoster->IsAppPreRegistered(ref, team, info); }
+
+	status_t RemoveApp(team_id team) const
+		{ return fRoster->RemoveApp(team); }
+
+	// needed by GetRecentTester
+
+	void AddToRecentApps(const char *appSig) const
+		{ fRoster->AddToRecentApps(appSig); }
+
+	void ClearRecentDocuments() const
+		{ fRoster->ClearRecentDocuments(); }
+
+	void ClearRecentFolders() const
+		{ fRoster->ClearRecentFolders(); }
+
+	void ClearRecentApps() const
+		{ fRoster->ClearRecentApps(); }
+
+	void LoadRecentLists(const char *file) const
+		{ fRoster->LoadRecentLists(file); }
+
+	void SaveRecentLists(const char *file) const
+		{ fRoster->SaveRecentLists(file); }
+
+private:
+	BRoster	*fRoster;
+};
+
+extern "C" int	_init_roster_();
+extern "C" int	_delete_roster_();
+
+#endif	// _ROSTER_PRIVATE_H
diff --git a/src/kits/app/Application.cpp b/src/kits/app/Application.cpp
index 4b1022466d..78acf84a40 100644
--- a/src/kits/app/Application.cpp
+++ b/src/kits/app/Application.cpp
@@ -44,6 +44,7 @@
 #include <PropertyInfo.h>
 #include <RegistrarDefs.h>
 #include <Roster.h>
+#include <RosterPrivate.h>
 #include <Window.h>
 
 // Project Includes ------------------------------------------------------------
@@ -216,7 +217,7 @@ BApplication::BApplication(const char* signature, status_t* error)
 BApplication::~BApplication()
 {
 	// unregister from the roster
-	be_roster->RemoveApp(Team());
+	BRoster::Private().RemoveApp(Team());
 	// uninitialize be_app and be_app_messenger
 	be_app = NULL;
 // R5 doesn't uninitialize be_app_messenger.
@@ -659,15 +660,18 @@ void BApplication::InitData(const char* signature, status_t* error)
 		}
 	}
 	// check whether be_roster is valid
-	if (fInitError == B_OK && !isRegistrar && !_is_valid_roster_mess_(false)) {
+	if (fInitError == B_OK && !isRegistrar
+		&& !BRoster::Private().IsMessengerValid(false)) {
 		printf("FATAL: be_roster is not valid. Is the registrar running?\n");
 		fInitError = B_NO_INIT;
 	}
 	// check whether or not we are pre-registered
 	bool preRegistered = false;
 	app_info appInfo;
-	if (fInitError == B_OK && !isRegistrar)
-		preRegistered = be_roster->IsAppPreRegistered(&ref, team, &appInfo);
+	if (fInitError == B_OK && !isRegistrar) {
+		preRegistered = BRoster::Private().IsAppPreRegistered(&ref, team,
+															  &appInfo);
+	}
 	if (preRegistered) {
 		// we are pre-registered => the app info has been filled in
 		// Check whether we need to replace the looper port with a port
@@ -679,17 +683,17 @@ void BApplication::InitData(const char* signature, status_t* error)
 			appInfo.port = fMsgPort;
 		// check the signature and correct it, if necessary
 		if (strcmp(appInfo.signature, fAppName))
-			be_roster->SetSignature(team, fAppName);
+			BRoster::Private().SetSignature(team, fAppName);
 		// complete the registration
-		fInitError = be_roster->CompleteRegistration(team, thread,
-													 appInfo.port);
+		fInitError = BRoster::Private().CompleteRegistration(team, thread,
+															 appInfo.port);
 	} else if (fInitError == B_OK) {
 		// not pre-registered -- try to register the application
 		team_id otherTeam = -1;
 		// the registrar must not register
 		if (!isRegistrar) {
-			fInitError = be_roster->AddApplication(signature, &ref, appFlags,
-				team, thread, fMsgPort, true, NULL, &otherTeam);
+			fInitError = BRoster::Private().AddApplication(signature, &ref,
+				appFlags, team, thread, fMsgPort, true, NULL, &otherTeam);
 		}
 		if (fInitError == B_ALREADY_RUNNING) {
 			// An instance is already running and we asked for
diff --git a/src/kits/app/Clipboard.cpp b/src/kits/app/Clipboard.cpp
index cf0ba391e7..0a1b6cdf6f 100644
--- a/src/kits/app/Clipboard.cpp
+++ b/src/kits/app/Clipboard.cpp
@@ -32,8 +32,9 @@
 
 // System Includes -------------------------------------------------------------
 #include <Clipboard.h>
-#include <RegistrarDefs.h>
 #include <Application.h>
+#include <RegistrarDefs.h>
+#include <RosterPrivate.h>
 
 // Project Includes ------------------------------------------------------------
 
@@ -56,7 +57,7 @@ BClipboard::BClipboard(const char *name, bool transient = false)
   fSystemCount = 0;
 
   BMessage message(B_REG_GET_CLIPBOARD_MESSENGER), reply;
-  if ( (_send_to_roster_(&message, &reply, false) == B_OK) &&
+  if ( (BRoster::Private().SendTo(&message, &reply, false) == B_OK) &&
        (reply.what == B_REG_SUCCESS) &&
        (reply.FindMessenger("messenger",&fClipHandler) == B_OK) )
   {
diff --git a/src/kits/app/InitTerminateLibBe.cpp b/src/kits/app/InitTerminateLibBe.cpp
index 15c4779a4d..31b0324802 100644
--- a/src/kits/app/InitTerminateLibBe.cpp
+++ b/src/kits/app/InitTerminateLibBe.cpp
@@ -25,7 +25,7 @@
 //------------------------------------------------------------------------------
 #include <stdio.h>
 
-#include <Roster.h>
+#include <RosterPrivate.h>
 
 // debugging
 //#define DBG(x) x
diff --git a/src/kits/app/MessageRunner.cpp b/src/kits/app/MessageRunner.cpp
index ced25729c4..bebe6b361d 100644
--- a/src/kits/app/MessageRunner.cpp
+++ b/src/kits/app/MessageRunner.cpp
@@ -29,6 +29,7 @@
 #include <MessageRunner.h>
 #include <RegistrarDefs.h>
 #include <Roster.h>
+#include <RosterPrivate.h>
 
 // constructor
 /*!	\brief Creates and initializes a new BMessageRunner.
@@ -98,7 +99,7 @@ BMessageRunner::~BMessageRunner()
 	// send the request
 	BMessage reply;
 	if (error == B_OK)
-		error = _send_to_roster_(&request, &reply, false);
+		error = BRoster::Private().SendTo(&request, &reply, false);
 	// ignore the reply, we can't do anything anyway
 }
 
@@ -176,7 +177,7 @@ BMessageRunner::GetInfo(bigtime_t *interval, int32 *count) const
 	// send the request
 	BMessage reply;
 	if (error == B_OK)
-		error = _send_to_roster_(&request, &reply, false);
+		error = BRoster::Private().SendTo(&request, &reply, false);
 	// evaluate the reply
 	if (error == B_OK) {
 		if (reply.what == B_REG_SUCCESS) {
@@ -267,7 +268,7 @@ BMessageRunner::InitData(BMessenger target, const BMessage *message,
 	// send the request
 	BMessage reply;
 	if (error == B_OK)
-		error = _send_to_roster_(&request, &reply, false);
+		error = BRoster::Private().SendTo(&request, &reply, false);
 	// evaluate the reply
 	if (error == B_OK) {
 		if (reply.what == B_REG_SUCCESS) {
@@ -319,7 +320,7 @@ BMessageRunner::SetParams(bool resetInterval, bigtime_t interval,
 	// send the request
 	BMessage reply;
 	if (error == B_OK)
-		error = _send_to_roster_(&request, &reply, false);
+		error = BRoster::Private().SendTo(&request, &reply, false);
 	// evaluate the reply
 	if (error == B_OK) {
 		if (reply.what != B_REG_SUCCESS)
diff --git a/src/kits/app/Roster.cpp b/src/kits/app/Roster.cpp
index 2aa121983f..00aa8545bf 100644
--- a/src/kits/app/Roster.cpp
+++ b/src/kits/app/Roster.cpp
@@ -48,6 +48,7 @@
 #include <Query.h>
 #include <RegistrarDefs.h>
 #include <Roster.h>
+#include <RosterPrivate.h>
 #include <Volume.h>
 
 // debugging
@@ -2304,92 +2305,6 @@ BRoster::SaveRecentLists(const char *filename) const
 const BRoster *be_roster;
 
 
-/*-----------------------------------------------------*/
-/*----- Private functions -----------------------------*/
-
-// _init_roster_
-/*!	\brief Initializes the global be_roster variable.
-
-	Called before the global constructors are invoked.
-
-	\return Unknown!
-
-	\todo Investigate what the return value means.
-*/
-int
-_init_roster_()
-{
-	be_roster = new BRoster;
-	return 0;
-}
-
-// _delete_roster_
-/*!	\brief Deletes the global be_roster.
-
-	Called after the global destructors are invoked.
-
-	\return Unknown!
-
-	\todo Investigate what the return value means.
-*/
-int
-_delete_roster_()
-{
-	delete be_roster;
-	return 0;
-}
-
-// _send_to_roster_
-/*!	\brief Sends a message to the registrar.
-
-	\a mime specifies whether to send the message to the roster or to the
-	MIME data base service.
-	If \a reply is not \c NULL, the function waits for a reply.
-
-	\param message The message to be sent.
-	\param reply A pointer to a pre-allocated BMessage into which the reply
-		   message will be copied.
-	\param mime \c true, if the message should be sent to the MIME data base
-		   service, \c false for the roster.
-	\return
-	- \c B_OK: Everything went fine.
-	- \c B_BAD_VALUE: \c NULL \a message.
-	- \c B_NO_INIT: be_roster is \c NULL.
-	- another error code
-*/
-status_t
-_send_to_roster_(BMessage *message, BMessage *reply, bool mime)
-{
-	status_t error = (message ? B_OK : B_BAD_VALUE);
-	if (error == B_OK && !be_roster)
-		error = B_NO_INIT;
-	if (error == B_OK) {
-		if (mime)
-			error = be_roster->fMimeMess.SendMessage(message, reply);
-		else
-			error = be_roster->fMess.SendMessage(message, reply);
-	}
-	return error;
-}
-
-// _is_valid_roster_mess_
-/*!	\brief Returns whether the global be_roster's messengers are valid.
-
-	\a mime specifies whether to check the roster messenger or the one of
-	the MIME data base service.
-
-	\param mime \c true, if the MIME data base service messenger should be
-		   checked, \c false for the roster messenger.
-	\return \true, if the selected messenger is valid, \c false otherwise.
-*/
-bool
-_is_valid_roster_mess_(bool mime)
-{
-	return (be_roster && (mime ? be_roster->fMimeMess.IsValid()
-							   : be_roster->fMess.IsValid()));
-}
-
-
 /*-----------------------------------------------------*/
 /*----- Helper functions ------------------------------*/
 
diff --git a/src/kits/app/RosterPrivate.cpp b/src/kits/app/RosterPrivate.cpp
new file mode 100644
index 0000000000..37d5e79da1
--- /dev/null
+++ b/src/kits/app/RosterPrivate.cpp
@@ -0,0 +1,112 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//---------------------------------------------------------------------
+
+#include <RosterPrivate.h>
+#include <Roster.h>
+
+/*!	\class BRoster::Private
+	\brief Class used to access private BRoster members.
+
+	This way, the only friend BRoster needs is this class.
+*/
+
+// SetTo
+/*!	\brief Initializes the roster.
+
+	\param mainMessenger A BMessenger targeting the registrar application.
+	\param mimeMessenger A BMessenger targeting the MIME manager.
+*/
+void
+BRoster::Private::SetTo(BMessenger mainMessenger, BMessenger mimeMessenger)
+{
+	if (fRoster) {
+		fRoster->fMess = mainMessenger;
+		fRoster->fMimeMess = mimeMessenger;
+	}
+}
+
+// SendTo
+/*!	\brief Sends a message to the registrar.
+
+	\a mime specifies whether to send the message to the roster or to the
+	MIME data base service.
+	If \a reply is not \c NULL, the function waits for a reply.
+
+	\param message The message to be sent.
+	\param reply A pointer to a pre-allocated BMessage into which the reply
+		   message will be copied.
+	\param mime \c true, if the message should be sent to the MIME data base
+		   service, \c false for the roster.
+	\return
+	- \c B_OK: Everything went fine.
+	- \c B_BAD_VALUE: \c NULL \a message.
+	- \c B_NO_INIT: the roster is \c NULL.
+	- another error code
+*/
+status_t
+BRoster::Private::SendTo(BMessage *message, BMessage *reply, bool mime)
+{
+	status_t error = (message ? B_OK : B_BAD_VALUE);
+	if (error == B_OK && !fRoster)
+		error = B_NO_INIT;
+	if (error == B_OK) {
+		if (mime)
+			error = fRoster->fMimeMess.SendMessage(message, reply);
+		else
+			error = fRoster->fMess.SendMessage(message, reply);
+	}
+	return error;
+}
+
+// IsMessengerValid
+/*!	\brief Returns whether the roster's messengers are valid.
+
+	\a mime specifies whether to check the roster messenger or the one of
+	the MIME data base service.
+
+	\param mime \c true, if the MIME data base service messenger should be
+		   checked, \c false for the roster messenger.
+	\return \true, if the selected messenger is valid, \c false otherwise.
+*/
+bool
+BRoster::Private::IsMessengerValid(bool mime) const
+{
+	return (fRoster && (mime ? fRoster->fMimeMess.IsValid()
+							 : fRoster->fMess.IsValid()));
+}
+
+
+// _init_roster_
+/*!	\brief Initializes the global be_roster variable.
+
+	Called before the global constructors are invoked.
+
+	\return Unknown!
+
+	\todo Investigate what the return value means.
+*/
+int
+_init_roster_()
+{
+	be_roster = new BRoster;
+	return 0;
+}
+
+// _delete_roster_
+/*!	\brief Deletes the global be_roster.
+
+	Called after the global destructors are invoked.
+
+	\return Unknown!
+
+	\todo Investigate what the return value means.
+*/
+int
+_delete_roster_()
+{
+	delete be_roster;
+	return 0;
+}
+
diff --git a/src/kits/app/app.src b/src/kits/app/app.src
index b8f4d33baf..ff47716e5e 100644
--- a/src/kits/app/app.src
+++ b/src/kits/app/app.src
@@ -18,5 +18,6 @@ APP_KIT_SOURCE =
 	RegistrarThread.cpp
 	RegistrarThreadManager.cpp
 	Roster.cpp
+	RosterPrivate.cpp
 	TokenSpace.cpp
 ;
diff --git a/src/kits/storage/Mime.cpp b/src/kits/storage/Mime.cpp
index acf0d44d89..2036ab5504 100644
--- a/src/kits/storage/Mime.cpp
+++ b/src/kits/storage/Mime.cpp
@@ -18,6 +18,7 @@
 #include <Node.h>
 #include <RegistrarDefs.h>
 #include <Roster.h>
+#include <RosterPrivate.h>
 
 #include <unistd.h>
 
@@ -51,7 +52,7 @@ status_t do_mime_update(int32 what, const char *path, int recursive,
 		if (!err)
 			err = msg.AddBool("force", force);
 		if (!err) 
-			err = _send_to_roster_(&msg, &reply, true);
+			err = BRoster::Private().SendTo(&msg, &reply, true);
 		if (!err)
 			err = reply.what == B_REG_RESULT ? B_OK : B_BAD_VALUE;
 		if (!err)
diff --git a/src/kits/storage/MimeType.cpp b/src/kits/storage/MimeType.cpp
index c260b76a88..22e436012b 100644
--- a/src/kits/storage/MimeType.cpp
+++ b/src/kits/storage/MimeType.cpp
@@ -18,7 +18,7 @@
 #include <stdio.h>			// For printf()
 #include <string.h>			// For strncpy()
 #include <RegistrarDefs.h>
-#include <Roster.h>			// For _send_to_roster_()
+#include <RosterPrivate.h>	// For SendTo()
 
 // Private helper functions
 bool isValidMimeChar(const char ch);
@@ -320,7 +320,7 @@ BMimeType::Install()
 	if (!err)
 		err = msg.AddString("type", Type());
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -356,7 +356,7 @@ BMimeType::Delete()
 	if (!err)
 		err = msg.AddString("type", Type());
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -629,7 +629,7 @@ BMimeType::GetSupportingApps(BMessage *signatures) const
 	if (!err)
 		err = msg.AddString("type", Type());
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -703,7 +703,7 @@ BMimeType::SetPreferredApp(const char *signature, app_verb verb)
 	if (!err)
 		err = msg.AddInt32("app verb", verb);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -779,7 +779,7 @@ BMimeType::SetAttrInfo(const BMessage *info)
 	if (!err && info) 
 		err = msg.AddMessage("attr info", info);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -836,7 +836,7 @@ BMimeType::SetFileExtensions(const BMessage *extensions)
 	if (!err && extensions) 
 		err = msg.AddMessage("extensions", extensions);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -878,7 +878,7 @@ BMimeType::SetShortDescription(const char *description)
 	if (!err)
 		err = msg.AddBool("long", false);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -920,7 +920,7 @@ BMimeType::SetLongDescription(const char *description)
 	if (!err)
 		err = msg.AddBool("long", true);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -956,7 +956,7 @@ BMimeType::GetInstalledSupertypes(BMessage *supertypes)
 	if (!err)
 		msg.what = B_REG_MIME_GET_INSTALLED_SUPERTYPES;
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1015,7 +1015,7 @@ BMimeType::GetInstalledTypes(const char *supertype, BMessage *types)
 	if (!err && supertype)
 		err = msg.AddString("supertype", supertype);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1163,7 +1163,7 @@ BMimeType::SetAppHint(const entry_ref *ref)
 	if (!err && ref)
 		err = msg.AddRef("app hint", ref);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1279,7 +1279,7 @@ BMimeType::SetIconForType(const char *type, const BBitmap *icon, icon_size which
 			err = msg.AddString("file type", type);
 	}
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1345,7 +1345,7 @@ BMimeType::SetSnifferRule(const char *rule)
 	if (!err && rule) 
 		err = msg.AddString("sniffer rule", rule);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1474,7 +1474,7 @@ BMimeType::GuessMimeType(const entry_ref *file, BMimeType *type)
 	if (!err)
 		err = msg.AddRef("file ref", file);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1512,7 +1512,7 @@ BMimeType::GuessMimeType(const void *buffer, int32 length, BMimeType *type)
 	if (!err)
 		err = msg.AddData("data", B_RAW_TYPE, buffer, length);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1553,7 +1553,7 @@ BMimeType::GuessMimeType(const char *filename, BMimeType *type)
 	if (!err)
 		err = msg.AddString("filename", filename);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1587,7 +1587,7 @@ BMimeType::StartWatching(BMessenger target)
 	// Build and send the message, read the reply
 	err = msg.AddMessenger("target", target);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1616,7 +1616,7 @@ BMimeType::StopWatching(BMessenger target)
 	// Build and send the message, read the reply
 	err = msg.AddMessenger("target", target);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1796,7 +1796,7 @@ BMimeType::SetSupportedTypes(const BMessage *types, bool fullSync)
 	if (!err)
 		err = msg.AddBool("full sync", fullSync);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
@@ -1834,7 +1834,7 @@ BMimeType::GetAssociatedTypes(const char *extension, BMessage *types)
 	if (!err)
 		err = msg.AddString("extension", extension);
 	if (!err) 
-		err = _send_to_roster_(&msg, &reply, true);
+		err = BRoster::Private().SendTo(&msg, &reply, true);
 	if (!err)
 		err = reply.what == B_REG_RESULT ? B_OK : B_BAD_REPLY;
 	if (!err)
diff --git a/src/servers/registrar/Registrar.cpp b/src/servers/registrar/Registrar.cpp
index 5d85d1b460..bbfe05e854 100644
--- a/src/servers/registrar/Registrar.cpp
+++ b/src/servers/registrar/Registrar.cpp
@@ -6,6 +6,7 @@
 #include <Message.h>
 #include <OS.h>
 #include <RegistrarDefs.h>
+#include <RosterPrivate.h>
 
 #include "ClipboardHandler.h"
 #include "DiskDeviceManager.h"
@@ -68,7 +69,7 @@ Registrar::~Registrar()
 	delete fRoster;
 	// Invalidate the global be_roster, so that the BApplication destructor
 	// won't dead-lock when sending a message to itself.
-	BPrivate::init_registrar_roster(BMessenger(), BMessenger());
+	BRoster::Private().SetTo(BMessenger(), BMessenger());
 	FUNCTION_END();
 }
 
@@ -233,8 +234,7 @@ Registrar::ReadyToRun()
 	fEventQueue = new EventQueue(kEventQueueName);
 	fMessageRunnerManager = new MessageRunnerManager(fEventQueue);
 	// init the global be_roster
-	BPrivate::init_registrar_roster(be_app_messenger,
-									BMessenger(NULL, fMIMEManager));
+	BRoster::Private().SetTo(be_app_messenger, BMessenger(NULL, fMIMEManager));
 	// create and schedule the sanity message event
 	fSanityEvent = new MessageEvent(system_time() + kRosterSanityEventInterval,
 									this, B_REG_ROSTER_SANITY_EVENT);
@@ -276,25 +276,6 @@ Registrar::App()
 }
 
 
-// init_registrar_roster
-/*!	\brief Initializes the global \a be_roster.
-
-	While this is done automagically for all other applications while libbe
-	initialization, the registrar needs to help out a bit.
-
-	\param mainMessenger A BMessenger targeting the registrar application.
-	\param mimeMessenger A BMessenger targeting the MIME manager.
-*/
-void
-BPrivate::init_registrar_roster(BMessenger mainMessenger,
-								BMessenger mimeMessenger)
-{
-	BRoster *roster = const_cast<BRoster*>(be_roster);
-	roster->fMess = mainMessenger;
-	roster->fMimeMess = mimeMessenger;
-}
-
-
 // main
 /*!	\brief Creates and runs the registrar application.
 
diff --git a/src/tests/kits/app/broster/GetRecentTester.cpp b/src/tests/kits/app/broster/GetRecentTester.cpp
index fe4907b324..fbe39fa750 100644
--- a/src/tests/kits/app/broster/GetRecentTester.cpp
+++ b/src/tests/kits/app/broster/GetRecentTester.cpp
@@ -14,6 +14,7 @@
 #include <Message.h>
 #include <Node.h>
 #include <Roster.h>
+#include <RosterPrivate.h>
 
 // Project Includes ------------------------------------------------------------
 #include <TestShell.h>
@@ -1270,8 +1271,8 @@ GetRecentTester::RecentListsLoadSaveClearTest()
 	roster.AddToRecentDocuments(&doc2, test_sigs[1]);
 	roster.AddToRecentFolders(&folder1, test_sigs[0]);
 	roster.AddToRecentFolders(&folder2, test_sigs[1]);
-	roster.AddToRecentApps(appSig1);	
-	roster.AddToRecentApps(appSig2);
+	BRoster::Private(roster).AddToRecentApps(appSig1);	
+	BRoster::Private(roster).AddToRecentApps(appSig2);
 	
 	// Check #1
 	NextSubTest();
@@ -1300,10 +1301,10 @@ GetRecentTester::RecentListsLoadSaveClearTest()
 	
 	// Save to disk and clear
 	NextSubTest();
-	roster.SaveRecentLists(kTempSaveFile);
-	roster.ClearRecentDocuments();
-	roster.ClearRecentFolders();
-	roster.ClearRecentApps();
+	BRoster::Private(roster).SaveRecentLists(kTempSaveFile);
+	BRoster::Private(roster).ClearRecentDocuments();
+	BRoster::Private(roster).ClearRecentFolders();
+	BRoster::Private(roster).ClearRecentApps();
 	
 	// Check #2
 	NextSubTest();
@@ -1323,7 +1324,7 @@ GetRecentTester::RecentListsLoadSaveClearTest()
 	
 	// Load back from disk
 	NextSubTest();
-	roster.LoadRecentLists(kTempSaveFile);
+	BRoster::Private(roster).LoadRecentLists(kTempSaveFile);
 	
 	// Check #3
 	NextSubTest();