Like I said I am not sure XP home has this functionality. XP pro does.mmm, do i trust you on that 1 - erm no
anyway im usin xp home !!
Usage: shutdown [-i | -l | -s | -r | -a] [-f] [-m \\computername] [-t xx] [-c "comment"] [-d up:xx:yy]
If you still dont trust it visit GOOGLE
Hope that works.