Domain Connectivity

I have two Windows 2000 Servers.

I have setup an AD domain called amsi on one of the servers. I didn’t use the DNS format for reasons I won’t get into. I have a second server I want to add to this domain.
I ran the AD wizard and selected “additional domain controller for an existing domain” and entered the Administrator and the admin password along with the domain “amsi”. I click next and get the following error.

“The wizard cannot gain access to the list of domains in the forest. Theerror is: The RPC server is unavailable.”

I ran net start rpcss, but the service was already started.

Any Ideas?