I am working on refreshing our servers and I have a questions what it is the best way to move DHCP from the old Windows 2003 server to a new Windows 2008r2 server? The problem is the new Windows Enterprise 2008r2 server has to have the same name as the current windows 2003 server. That part I have worked out by giving the new server a name like server-t. The plan is to change the current 2003 server name to server-old and give it a different IP address. Then, I will rename the server-t server to the current Windows 2003 server name and give it the IP that the new server-old server currently has. Now the problem. I recreated the scopes from the server-old server on the new server but, didn't activate them and I haven't authorized the new DHCP server in the domain yet either. I was planing on authorizing the new DHCP after the renaming and re-iping has been completed. Do I need to de-authorize the DHCP on the old server BEFORE doing all of the name and IP swapping? Will I have any problem getting the new DHCP to authorize into the domain since it has the name of the old Windows 2003 server? The domain functional level is Windows Server 2003.