I added a 2008 server to the network this spring, everything has been fine. DNS was replicating well, etc. I am looking to finish moving everthing from my 2003 DC to 2008. I exported DHCP from 2003 to 2008 this morning. I imported DHCP to 2008, seemed to go ok. I transfered all my roles from 2003 server to 2008, seemed to go ok. Transfered domain naming master, PDC, Schema Master, RID master, infrastructure master.
Problem: My workstations don't see the DHCP server. The server gives me Event ID 1059, The DHCP service failed to see a directory server for authorization.