linux w/samba pdc & xp clients; users problem
I'm having a problem connecting my Windows client to my Samba PDC. I currently have several Windows XP pro machines connected as a workgroup (so users logon locally, no AD) and i'm setting up a Samba PDC to have them connect as a domain. I've looked around on the net and I'm pretty sure I've set up smb.conf as it should be (no problems with testparm). Anyway I'm at a stage where I'm trying to connect an XP machine to the domain but when it prompts me for a username/password with permission to join the domain, it comes up with 'user not found', even though the users that i'm trying do exist on Samba and ubuntu. Also, I created a samba group called Admin with these users in and included the line 'admin users = @Admin' in smb.conf so the users i'm trying should definitely have access.
Is it something to do with windows local user accounts?
Is it something to do with winbind?
does the xp machine i'm trying on need to be added manually to samba?
thanks in advance