auto connect 5.1 to LCS in non-trusted forest/domain?

Archived from groups: microsoft.public.windowsxp.messenger (More info?)

Here is my situation:

Authenticate to NT4 domain from Windows XP; Windows Messenger 5.1.0639 is
configured to log into .NET Passport Account and SIP Communications Service
Account. The SIP service is a Live Communications Server running in an
Active Directory 2003 in a different location. The NT4 domain and AD2003
have no trusts. My username is the same on both, but I currently have
different passwords.

Is it possible to get Messenger to save my credentials for logging into the
AD2003 so it happens automatically at login, instead of asking me for my
AD2003 password?

Thanks,

David Gerstenecker
University of Illinois at Urbana-Champaign