The audit was done proactively by our department to become compliant by the end of the year. We're rolling out brand new PC's across the board, and want to make sure we're 100% legal with our NT Server and Exchange Server licenses.

We also found quite a bit of other odd programs that find a home on some corner PC in the middle of nowhere that we had to remove.

I know MS (yuck) has a tool that you can run across your network and will give you all kinds of installed software information. I'm not sure it's perfectly reliable, but it's a lot better than walking around to each station to snoop...plus it's quiet, your users are never the wiser.

We're looking at a much more inclusive package that runs on a server all of it's own with a spifty little web interface...Unfortunately I don't know what it's called, but I'm sure there's plenty of them out there.

Good luck. It's a pain in the A$$!