Hi
nsr.res -> config file
nsrjb.res -> jukebox config file, containing info on media devices, volumes etc.
nsrla.res -> connection settings with ports etc.
The only way to force a client to connect to a specific server is to add '-s servername' in the shortcut of nwadmin.exe. Otherwise the server would just scan the network for all networker servers. Usually it would connect to the last server connected to.
Hope this helps...
George