The appropriate newsgroup for Microsoft Small Business Server 2003 questions
is here:
microsoft.public.server.sbs
In the meantime, log onto your SBS server and read the help files on Group
Policy and Group Policy Editor.
Remember that workstations join a Domain only to the point of the screen
where users log in. If you have not set up Domain Users in your Domain, no
one will ever get past the log-in screen to join the Domain.
If you are setting up a test network as a learning exercise, buy a good
step-by-step book and spend a few months learning how to build a Domain
network.
If you are setting up an actual work environment, and you don't already know
these most basic concepts, you are on a course for disaster. Save yourself a
lot of down-time and money -- contract with a professional set up and
maintain your Domain.