Switch to Install Mode in Windows 2000

In the old days, you could not just start installing stuffs on a running server through terminal server. You were often prompted with this error message:

start
cmd
change user /install

to go back

start
cmd
change user /execute

When that happens , you need to switch the server to install mode. Make sure that your users are off the server.
Switch to Install Mode in Windows 2000
http://support.microsoft.com/kb/320185