Hi Koney. Have a read through this thread - http://eab.abime.net/showthread.php?t=46927
and see if any of this helps get SabreMSN running on your Amiga.
If you're trying to get AmiMSN to work, you need a TCP stack (obviously) and need to have RexxMast running. It should run from CLI then, and hopefully provide a way to chat to your MSN buddies on a basic Amiga.