I've had the same problem. According to microsoft and other it people, home editions cannot join a domain. I had to upgrade to ultimate in order to join a domain. Now my local user account (administrator) has been disabled. Cannot rejoin domain because the morons deleted the computer from active directory..now i'm stuck and need to do a complete install instead. How's that for information...

Sorry for the delay in writing back. I fell through a ceiling and got pretty busted up, so I've been out of commission lately. I will try the suggestions and let you know how it goes. Thanks.

I tried enabling the Remote connection - actually, it was already enabled, but I disabled and enabled again. Still no dice. My computer sees the notebook, but I'm being denied access. I'm sure there's some simple answer that I'm missing.

are the XP machines xp home?

xp home + vista network = crap

as xp doesnt support passwords properly and has no domain support or local security policy

Yes, XP Home edition on all of them. The network has always worked fine on them until adding the vista notebook.

thats the problem

I ended up reformating the hd and putting on xp pro..I'm thinking that vista is going to be a real big pain in the $(# for any business.