[Samba] Group Mapping

[Jacob Smith]

I have a samba 2.2.7 PDC running on RH 7.3.  It works good with roaming
profiles, etc, but I want my NT machines to recognize groups that I have set
up on my linux box.  Any body have any ideas about what the best way to do
this is....? I have tried using the domain group map and user map options in
the smb.conf but it does not recognize them.  I have also read that using
LDAP might be an option?  Any ideas or tips would be very helpful.  Thanks,
Jacob Smith