XP key Question

is there a way to change your Xp key without reinstalling it ?
only way I ever did it was put the number in when it asks you for it during the install.
is there a way to change it now ? once Xp is installed ?

 

http://techrepublic.com.com/5100-6270-5034890.html

 

Call Microsoft and ask them, we dont know anything about changing keys here, that would be considered "Pirating"

 

It's not pirating. It's on the microsoft website.

 

Soorry, I dont read the microsoft site much, hahaha