I concur with nothinman...
While I got my cert in NT and not 2000, a consultant set up our new Exchange 2000 server and set it up with Active Directory (AD). He "mirrored" our NDS over to ADS ... that way we already have the structure set up if we are crazy enough to switch to a Win2000 server based network. We are currently Novell 5.11 As to how it is done, I can't be of any help... sorry.