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All about Change Product Key

articles.techrepublic.com.com/5100-10878_11-5034890.html
Describes how to change the product key for a Volume Licensing installation of Windows XP. How to change the Volume Licensing product key on a computer that is running Windows XP Service Pack 1 and later versions of Windows XP...

digg.com/software/How_to_Change_Windows_XP_Product_Key_or_Serial_and_Registration_Information
Change the Windows XP product key by editing the registry or using a Microsoft WMI script Now, select the Change Product Key option and enter your new product key as shown in Figure B. Finally, click Update and close the window.

pcsupport.about.com/od/productkeysactivation/ht/changexpkey.htm
The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry and allows you to change windows product key or serial and registration information.

tech84.wordpress.com/2008/03/07/how-to-change-the-windows-xp-product-key-code/
Not comfortable making registry changes? Luckily there is another option if you need to change your Windows XP product key code. The Magical Jelly Bean Keyfinder, a popular product key finder program, also has the ability to easily change the Windows XP product key.

www.tech-recipes.com/rx/1319/xp_get_updates_change_invalid_product_key
13.Click Change Product Key.

www.nine-11.com/howto/XPChangeKey.htm
2) open the key changer: start\run type %systemroot%\system32\oobe\msoobe.exe /a click the telephone customer support click next click change product key...

www.shivaranjan.com/2006/09/18/how-to-find-and-change-windows-product-key-and-registration-information/
How can I change my product key on Windows XP? Click Change Product key.