Help for connectivity between Unix and Windows NT Server 4.0

[ggue2408 at tiscali.be]

I have a server Unix with Samba version 2.0.6 and a server NT version 4.0,
they are connected on a unique domain.
The share directories are in the Unix server and the users - the groups
(global and local) are in the NT Server.
I don't kwnow how is it possible to give access to the shared folders on

the Unix server with the groups defined on the NT server ?

Please help me.