IsiWinKey is a small program you can use to retrieve vital information you'll need if you ever need to reinstall Windows. The product name, product ID, and CD key number are shown by simply running the program. Just write them down and don't lose them again in order to complete a reinstall. IsiWinKey is snap to use and could bail you out of a world of trouble.
With this new release reports may be automatically saved to disk.
Please visit Isiwinkeyweb page to learn about restrictions with some windows xp versions.