win32api.InitiateSystemShutdown and 'Access is denied'

[Uwe Becher]

Hi,

I'm trying to shutdown my local W2K machine using

win32api.InitiateSystemShutdown(computer, "Rebooting!", 0, 1, 1)

an receive

pywintypes.api_error: (5, 'InitiateSystemShutdown', 'Access is denied.')

while shutting down any remote machine works fine. The error happens on 
a Python 2.1.1 as well as on Python 2.2.1.

Does someone have an idea?
Thanks.

Uwe