Our topology consists of 7 Servers.
1 - Server 2003 SP2, GC/DC
1 - Server 2003 SP2, DC
1 - Server 2003 R2, DC, Exchange Server
1 - Server 2003 R2, Member Server
1 - Server 2003 SP2, File Server
1 - Server 2008 R2, Terminal Server
1 - Server 2008 R2, File Server
Our current forest level is 2000, and the domain level is 2003. Is it save to say that I can just put a 2008 R2 cd in the GC/DC and run the forest prep and ad prep commands to upgrade the levels? If there is anything else that we need to be aware of so we dont break the domain, that would be appreciated. Thanks.