Greetings --
If it was a retail license and you have proof of purchase:
How to Replace Lost, Broken, or Missing Microsoft Software or Hardware
http://support.microsoft.com/default.aspx?scid=KB;en-us;326246
If it was an OEM license, you should contact whomever sold you the
PC.
There's no limit to the number of times you can reinstall and
activate the same WinXP license on the same PC. If it's been more
than 120 days since you last activated that specific Product Key,
you'll most likely be able to activate via the Internet without
problem. If it's been less, you might have to make a 5 minute phone
call.
Here are the facts pertaining to activation:
Piracy Basics - Microsoft Product Activation
http://www.microsoft.com/piracy/basics/activation/
Windows Product Activation (WPA)
http://www.aumha.org/a/wpa.htm
Bruce Chambers
--
Help us help you:
You can have peace. Or you can have freedom. Don't ever count on
having both at once. -- RAH