>I'd like to be able to tie into the NT servers' user manager data. Novell has libraries that can be used for Netware. Is there an equivalent thing for Windows NT?

Yes indeed, with the right access level. I use it all the time, User Manager, Server Manager, Event Viewer, etc. I've forgotten the exact name, but it's part of the NT Server installation package, something about administrative tool kit, I think. Probably someone else can be more exact.