I have a Nt 4.0 server single domain enviroment. I have 1 primary domain controller and 2 backup domain controllers. “I think” I want to install a Windows 2000 server and have it be the Primary controller. (The current primary controller is a slow system and the new Windows 2000 server is a fast system.)The current primary has a modem pool hooked up to it which will be removed as soon as a T-1 is brought in 45 days. I would like to also install Exchange server onto this Windows 2000 server. Cananyone make some recomendations as to the steps I should take to make this all happen? Does this sound feasible? Is it possible to have a NT 4.0 primary and a Windows 2000 primary on the same domain? Any recomendations would be helpful. Thank You in Advance