Server the netbios name of the Terminal Server.

If you want to connect to a Terminal Server locally you should not specify the server name. Please note that in the case of a local connection this property will return the computername ) 

Note that Windows XP SP 2 by default does not allow remote RPC connection to Terminal Server (enumerating sessions and processes). You can change this behaviour by creating the following registry entry on the XP machine: 

   HKLMSYSTEMCurrentControlSetControlTerminal Server
"AllowRemoteRPC" = REG_DWORD:1

Also make sure that the Windows firewall on the client is configured to allow File and Print sharing, as well as Remote Desktop.

TJwTerminalServer Properties