Ted:
The server's IP address (usually in the format 192.168.x.x:9000) will work. I've noticed that some of the newer Linksys broadband routers provide a guest account for visitors that leases an address that is actually on a different subnet for improved security.
In my system, the pc running SBS, is in a different room to get all that noise, mechanical and electrical, away from the listening environment.
Larry