While Microsoft can not endorse what JDCMAN is suggesting, I believe it may work. And once you get the key, you can do an internet search for the Product Key, If it is listed on any websites, then the key is either a:
1) Retail key that was leaked to the internet.
or
2) OEM SLP key used in the OEM Hack that makes Vista think that it was pre-installed on a computer built by a large computer manufaturer. Vista looks for the specal code in the motherboard bios, but the request is redirected to a driver that mimics the specal code and Vista Self-Activates
Either way, you know that the Vista install Non-Genuine and was Pirated.
Thank you,
Darin Smith
WGA Forum Manager