How do I find my product key?

As title really, is there any way on Vista to relate the product key as found on the disk packaging to the Product ID as shown in Control Panel? Reason I have multiple copies of Vista Premium Home and I want to wipe one machine with a failing disk and reinstall. But which copy do I use??

This may work

Belarc Advisor shows it on previous versions and as it’s now Vista compatible, I’d presume it will on Vista…

Right on the money squire thanks :thumbsup: