samba - Mar 2003 - Samba only reading primary NT groups - help please

I have an NT4 PDC with about 40 users and 40 groups roughly.  I setup two
samba 2.2.7a file servers and am using winbindd
for authentication.

All users have primary group of Domain Users.  I want files that are rw by
marketing group:

drwxrwxr-x    3 "owner" "domain"+Marketing        4096 Mar
11 10:16
Advertising

When I do this the "Marketing" group cannot access these directories
because
it thinks they are only in "Domain Users".

getent passwd & getent group and all the winbindd checks are fine.

Please help?

Thanks!
-------------------------
Dean Dufresne
Retail Planning Associates
IT Technician
Grepmaster
Office: (614)564-1000
Cell: (614)226-3926