Sign in problems

Having phoned Microsoft and discovered that Microsoft don't sup****t MSN
messenger for Mac by phone, I have been told that the only sup****t
available is to write a post on this forum.

We cannot sign in using Microsoft messenger for mac 6.0.3 - used under Mac
OS 10.5.2. We have tried on three different macs, and on vista (running on
Parallels). All have problems and cannot sign in. We've even tried using a
third party application but even that can't log in. Nor can we sign in if
we use a friend's internet service provider.

Does Microsoft even care about Microsoft Messenger for Mac? It is a two
year old program and Microsoft just told me that it is a free program and
is unsup****ted by phone.

I don't know whether this is related, but we installed Office 2008 a
couple of weeks ago.

Sorry for starting up a new thread, but I would like replies, rather than
it be at the end of another very very long thread.