Just found this:
You can accelerate Windows 2000’s or XP’s shutdown processes too, although it requires a trip to the Registry Editor.
Go to Start, Run, type Regedit then navigate to Hkey_Local_Machine/System/ CurrentControlSet/Control and select the Control folder. Right click on WaitTokiliServiceTimeout, select Modify and reduce the value to less than 500 the default is 20,000 (20 seconds). This shortens the time XP or 2000 waits before automatically shutting down apps.