WMI/ADSI might be considered an 'external' program in this case as it is not part of a standard installation of Windows 9x.

I am not aware of any scriptable method to close a specific application in Windows 9x in an default installation. However, PV.EXE might be the faster solution as WMI/ADSI requires installation plus reboot plus registry hacks for remote access.
_________________________
There are two types of vessels, submarines and targets.