Where can i buy a vista Product key?

Question

I own a copy of vista but was wondering where to buy another cd key to use on another computer. I dont want to have to buy a whole other disk, just the product key.

Answer 1

http://www.microsoft.com/windows/windows...

Answer 2

Microsoft...

Answer 3

microsoft.com

Answer 4

Kudos to you for wanting to be legal.  What you need is an additional license.  This is from Microsoft site:

Have more than one PC that is ready to run Vista? Once you're running Windows Vista on one computer, you will probably want to run it on other computers you own. Now it's easy to get the additional licenses you need to put Windows Vista on your additional computers. (You will need one license for each computer running Windows Vista.)  

-link below for more info-