How To Change the Windows XP Product Key Code

Time Required: Less than 15 minutes
Here's How:
Click on Start and then Run.
In the text box in the Run window, type regeditand click OK. This will open the Registry Editorprogram.
Locate the HKEY_LOCAL_MACHINE folder underMy Computer and click on the (+) sign next the folder name to expand the folder.
Continue to expand folders until you reach
theHKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents registry key.