You might want to check this previous thread from Oct. 26, 2009:
Backup Your Keys for Windows 7
I have used this and it works great!Do you reinstall Windows often? Worried that you will run out of activations with your precious genuine key? Then No Clue's Token Restore is the tool for you!
"While working with a camera crew supervising flight testing of advanced aircraft at Edward's Air Force Base, California,
the camera crew filmed the landing of a strange disc object that flew in over their heads and landed on a dry lake nearby.
A camera crewman approached the saucer, it rose up above the area and flew off at a speed faster than any known aircraft."
---NASA astronaut, L. Gordon Cooper
Why would anyone need to reinstall windows so often?
There was a myth that this was good but its a myth I have never seen a Good reason to do so
intelligence and knowledge has NOTHING to do with age, Bill
I do it cus I screw up my Windows installs constantly and due to the fact that I am always tryin out linux distros.
I think it's just personal Preference. I have a habit of reinstalling 7 so many times. I always have done this. Did it once or twice with XP. And for Vista many times.