What exactly are you having problems with?
You can program your own Web Messenger control using the API set that can call from your own code. The only control that you don't have full access to is the sign-on control. The rest of it is up to you to code yourself. This might get around your problem. There are numerous articles on how to program against the WM API on
http://www.liveside.netAs stated in the documentation, the WM control is only compatible with the following browsers :-
Internet Explorer 6 or greater
Firefox 1.5, Firefox 2.0 on Windows
Firefox 1.5, Firefox 2.0 on Mac OS X
Colin Brown
WL MVP
Windows Live MVP