After reading migration from NT4 to 2K3 notes this is my plan to MIGRATE but I dont know if it will work. I have two NT4 servers, a PDC and a BDC. I want to make the new 2k3 server BDC in the same domain. Will the 2k3 server work as a BDC having a NT4 as a PDC and with a NT4 BDC? if it works Im planning to move users, groups, computers, and applications in phases and after having everything running in the 2k3 server I will promote to PDC and remove the old PDC. will this plan work? and will it be a problem to remove the old PDC? any suggestion will be helpfull. thanks.