Lost Windows Product Key

[Innobate]

Recover your lost Windows XP Retail Edition Product Key using INNOBATE
Product Key Recovery.

Download it from www.cnet.com

http://www.download.com/3000-2408_4-10710678.html?tag=dl.1

This product does warn you if your windows xp is a OEM version.

 

[Peter Foldes]

Belarc Advisor and Magic Jellybean will also do this quite proficiently also