The “at” command can be very useful. Below is just one simple use to schedule a reboot of a Windows 2003 server at a certain time and day.
The at command:
at [\computername] TIME [DATE] “command”
at 3:00 AM Sun shutdown -r
The above command will restart (-r) the server the command is run on at 3:00 AM on the next Sunday it encounters.
Hope this helps.