Spent whole day prepping SBS 2003 for migration to new SBS 2011 server. After getting server cleaned up and making answer file for new server to read, attempt to begin process failed as new server can't see old server via FQDN. For example, I can Shift-F10 to command prompt and ping 2003 server by NetBIOS name just fine (and can ping new server's IP from rest of network). I'm certain DNS on the old server is the culprit as running NSLOOKUP on new server states DNS server can't be found. I've run DCDIAG DNS tests and nothing comes back as suspect. Even stranger, using Network Monitor on old server, I swear I can't even see the new server's attempts to talk to the DNS server. I CAN see ping traffic between the two via NM. Any ideas?