diff --git a/mailnews/addrbook/public/nsIAddrDBAnnouncer.idl b/mailnews/addrbook/public/nsIAddrDBAnnouncer.idl
new file mode 100644
index 00000000000..bfb177e57b2
--- /dev/null
+++ b/mailnews/addrbook/public/nsIAddrDBAnnouncer.idl
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#include "nsISupports.idl"
+
+interface nsIAddrDBListener;
+
+[scriptable, uuid(A4186D8A-1DD0-11d3-A303-001083003D0C)] 
+interface nsIAddrDBAnnouncer : nsISupports {
+
+	void AddListener(in nsIAddrDBListener listener);
+	void RemoveListener(in nsIAddrDBListener listener);
+
+	void NotifyCardAttribChange(in unsigned long abCode, 
+								in nsIAddrDBListener instigator);
+	void NotifyCardEntryChange (in unsigned long abCode, 
+								in unsigned long entryID, 
+								in nsIAddrDBListener instigator);
+
+	void NotifyAnnouncerGoingAway();
+};
diff --git a/mailnews/addrbook/public/nsIAddrDBListener.idl b/mailnews/addrbook/public/nsIAddrDBListener.idl
new file mode 100644
index 00000000000..80fa3886368
--- /dev/null
+++ b/mailnews/addrbook/public/nsIAddrDBListener.idl
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#include "nsISupports.idl"
+
+interface nsIAddrDBAnnouncer;
+
+[scriptable, uuid(A4186D89-1DD0-11d3-A303-001083003D0C)] 
+interface nsIAddrDBListener : nsISupports {
+
+	void OnCardAttribChange(in unsigned long abCode, 
+							in nsIAddrDBListener instigator);
+	void OnCardEntryChange (in unsigned long abCode, 
+							in unsigned long entryID, 
+							in nsIAddrDBListener instigator);
+    void OnAnnouncerGoingAway(in nsIAddrDBAnnouncer instigator);
+};
diff --git a/mailnews/addrbook/public/nsIAddrDatabase.idl b/mailnews/addrbook/public/nsIAddrDatabase.idl
new file mode 100644
index 00000000000..81c175b8f6a
--- /dev/null
+++ b/mailnews/addrbook/public/nsIAddrDatabase.idl
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#include "nsIAddrDBAnnouncer.idl"
+#include "nsIAbCard.idl"
+
+[ref] native nsFileSpec(nsFileSpec);
+[ptr] native nsIMdbTableRowCursor(nsIMdbTableRowCursor);
+[ptr] native nsIMdbEnv(nsIMdbEnv);
+
+%{C++
+#include "nsFileSpec.h"
+#include "mdb.h"
+%}
+
+
+[scriptable, uuid(A4186D8B-1DD0-11d3-A303-001083003D0C)] 
+interface nsIAddrDatabase : nsIAddrDBAnnouncer {
+
+	void Open(in nsFileSpec folderName, in boolean create, 
+			  out nsIAddrDatabase pMessageDB, in boolean upgrading);
+	void Close(in boolean forceCommit);
+	void OpenMDB(in string dbName, in boolean create);
+	void CloseMDB(in boolean commit);
+
+	void Commit(in unsigned long commitType);
+	void ForceClosed();
+
+	void CreateNewCardAndAddToDB(in nsIAbCard newCard, in boolean benotify);
+	void EnumerateCards(out nsIEnumerator result);
+};