Windows XP WMI help: How do i get an ap that output which cpu it is being executed on

[yoyomonkey]

I was wondering if any one can help.

I am trying to write an app that once executed will output to a text file which cpu / core it has executed on.

It is possible to assign a particular process to a particular cpu.

But i want to be able to find out which particular cpu executed a specific app.

I have trawled through the wmi (win32_processor but this is only returns info on the processors one may have ) anyone have any ideas how to get these stats.

Many thanks for any help
yoyomonkey