I just needed to do that...and so for you all to know...because the day will come when you need to shutdown XP... ;-)
shutdown /m \\Name-of-PC-to-shutdown /f /s
/m \\Remote-PC --> obviously the option to call the remote computer by name
or IP
/f             --> forces closing of all running applications
/s             --> shutdown of PC
/r --> reboots the PC
/t --> set time limit for shutdown in [s]
shutdown /?
cheers
 
