[Samba] windows 2003

[fausto milinazzo]

I am running samba  2.2.12 under a 2.2.22 linux kernel (slakware).

Is it possible using this version of samba to join a domain  and become a 
domain member if the pdc (or whatever it is called  under this version of 
windows) is running windows 2003?  Is there even a concept of a domain here 
or do I have to support active directory by going to samba 3?

Whenever I try to join the domain, I get an access denied error message

failed tcon_X
NT_STATUS_ACCESS_DENIED
unable to join domain

Any help would be appreciated.