How many time does it happen OMG I lost my Key for my Windows disk. Well I found a nice tool that will give the Key that was used in all Windows OS from 95 - 2003. www.magicaljellybean.com Magic Jelly Bean will pull not only the OS KEY but also Office KEYs too. this will only pull the key used, it will not pull other keys that were not provided with the CD. So if you lost your Key, I would suggest getting this Legal Key Finder. I tried it on my system and it works great I now use it at my work for pulling Keys before I do a reinstall on a system.