Please let us know how useful you find this tip by rating it below. Do you have a useful Windows tip, timesaver...
or workaround to share? Submit it to our monthly tip contest and you could win a prize!
This tip explains how to change the Product Key by deactivating Windows XP SP1 or SP2.
To deactivate Windows XP, simply browse to the windowssystem32 folder and delete or rename the file WPA.DBL. This will allow you to reactivate XP with another Product Key by activating using the telephone/change product key. It is easier than editing the registry to deactivate.