As long as Windows is installed on the computer, the Windows serial number should be retrievable by using the Magical Jellybean from the link below:

http://magicaljellybean.com/keyfinder/

But even if you extract the current product key from the installed Windows operating system, you'll still need a complete Windows 2000 CD to reinstall it on the computer.. A boot disc won't do it unless you've go the operating system installation disc.

Hope this helps.

Grif