Active Directory users via OSX Server 3.3 + set up …

Newbie questions regarding existing Active Directory user accounts and OSX Server 3.3…

1) FE College – Win2K network with 4000 users. Approx 450+ users are Art staff/students. Xserve has been configured to get info from Active Directory server. Would like to let these users log-in using 30+ G4s in Art school. Have a list of users in Workgroup Manager (up to 1000, where could the rest be?). How do set up client machines (macs) to use Xserve’s Active Directory info. to authenticate clients (same log in as Windows account) ?

2) Without poking around in Active Directory records – how much can I manage the OSX clients details ?

thanks