SysInternals makes a program called PMon that is free for download and will give you a process listing. 
open(LIST, "pmon|");
while(<LIST>)
{
# analyze output of pmon here...
}

[download]
Something like above should do the trick. I have never used PMon, so I don't know what the ouput looks like, but I would think it would give you a process's current state in the output.

Jeremy

In reply to Re: Checking that local Windows machine is idle by enoch
in thread Checking that local Windows machine is idle by Anonymous Monk

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