Thanks to a suggestion from Alex the Win32 nodeside script has been updated to include information on running processes (in addition to running services which it did already).
The new script will start to appear in the general release in the next couple of weeks but if you want to get your hands on it now and have a play it can be downloaded from www.purplepixie.org/freenats/patch/sw/080410/node.vbs for your amusement.
Any comments or bug reports especially welcome before it goes into general release.
FreeNATS Network Monitor