Microsoft Windows [Version 6.0.6001] (C) Copyright 2006 Microsoft Corp. c:\windows>netsh ras show registeredserver ?
show registeredserver [[domain = ] domain [server = ] server ]
Displays whether the given computer is registered as a Remote
Access server in the given domain.
server - the computer name of the computer in question.
If no server is specified the computer from which the
command is issued is assumed.
domain - the domain. If no domain is provided, the primary
domain of the computer from which the command is
issued is assumed.