shut down script needed

Hi. I’m looking for a script to use on XP Home to shut
down the computer using the task scheduler. There are
presently 2 profiles on the pc. Owner who has admin
rights and family which does not.
I want to be able to schedule the pc to shut down at a
specified time while FAMILY is logged on. I’ve tried the
old TSSHUTDOWN but it only works under OWNER. I’ve tried
changing the RUN AS as well as setting it up under both
both profiles. No luck. With past operating systems you
could use a system batch file. This is not recognized in
XP.
Also, is there a way to change the default coding in
TSSHUTDOWN? When it runs it gives the user a chance to
abort within 60 seconds. Kids aren’t stupid….
Any help here would be nice. I’ve run out of ideas.