Help me in trading in windows xp for x64!!!

[dguy6789]

I have a self built pc. I have Windows XP Pro with SP2, and the box and all it came in.

I want to trade it in for the X64 version of XP Pro. Where is the COA or ID that I can use to enter on MS's site? I can't find it on the box at all. The CD Key won't fit as far as I know. Some help would be appreciated.

http://www.microsoft.com/windowsxp/64bit/upgrade/default.mspx

 

[Johnnie]

product id
start-setting-control panel-system-

 

[dguy6789]

oh ok, thanks.