My company has been using blackberrys for a while with BWC, but now we want to move to BES.

Our network is run with a Windows NT 4 domain controller, and our exchange server runs on Windows NT 4 with Exchange 5.5. Our thoughts were to run seperate windows 2000 or 2003 BES server. Does BES require an activedirectory network? Is this setup possible?

Thanks in advance.

YES read the install guide please. Make sure you create the besadmin account and install with it only.