Putting a PC on Standby Remotely…

Hi everybody,
Can someone please suggest me how to put PC’s running WIN-98 in a remote office to be scheduled to go on standby mode at a specific time of the day.???

I have tried the windows scheduler, which allows me to schedule programs to runand stop, but I can’t find a way to put the PC’s on standby mode.

Please suggest me a way out.

Kindest regards,

DT