Thanks for the replies and wisdom.
1) no, I'm running IIS.
2) no, just standard Activestate install of perl


I'd already run a foreach on the hash to find what was available, and there is a LOT of stuff there, most of which matches the VBSCript variables, just that the three ways of finding the login id don't see anything.
HOwever, I'll continue the hunt, armed with new knowledge!