Systems Management

Hello everyone,

I have one question: Is there any option to add command for defragmentation (defrag c: -f) to existing logon script using Gropu Policy?
I need to defragment OU (i.e. Desktops) using scheduled task.

We have scheduled update of Windows XP Professional once per week (on weekend) at night so it will be the best way defragment after update is completed.

I'm searching the web for a week and found nothing useful.

I also discovered Logon/Shutdown scripts in GPO but this way I can not use.

Scheduled task on the server i have already tried, but my boss didn't approved that.[X(]