Hi
- Transfer any fsmo roles olded by the servers to be removed
How to view and transfer FSMO roles in Windows Server 2003
http://support.microsoft.com/kb/324801/en-us
-Make sure that you have at least one GC on your forest.
- Transfer any other services that you might have on the old DC (like;
DNS, DHCP, Wins, DFS, etc).
- Take the old server offline; confirm that everything works with the old
server offline.
- If everything OK, use Dcpromo to remove the old DC from network, (Ps:
don't
forget to remove it manually from Active Directory Sites and Services)
Check:
Decommissioning a Domain Controller
http://technet2.microsoft.com/Windo...bf98-4a80-8718-dd80dc1071fd1033.mspx?mfr=true