You might also want to have a look at the Active State site and Win32::Process and Proc::Background::Win32, this should give you something to go on, searching the mailing lists is a good idea too. tlist.exe from the ResKit is the easiest way I know to do this though, unfortunatly that would mean 1 system call, after that Win32::Process can handle the rest.

"Nothing is sure but death and taxes" I say combine the two and its death to all taxes!