Windows Server 2003 you could use Terminal Services Manager to manage the terminal services sessions on remote computer. But this feather wasn’t available in Windows 2000. And sometime for whatever reason, you can’t get to the console even on Windows 2003.
Some of the Terminal Server Commands come to the rescue. You can use the “query session /server:<servername> to get a list of the sessions on the server:
C:\>query session /server:xyz
SESSIONNAME USERNAME ID STATE TYPE DEVICE
console 0 Conn wdcon
rdp-tcp 65536 Listen rdpwd
rdp-tcp#21 Administrator 1 Active rdpwd
Then you can use the “reset session” command to free up sessions.
C:\>reset session 2 /server:xyz
There is a KB article about this: KB30192