Hi,

If you scroll the link below you will see that:
(Microsoft has forgotten XP in the list).

APPLIES TO
• Microsoft Windows 2000 Professional Edition
• Microsoft Windows 95
• Microsoft Windows 98 Standard Edition
• Microsoft Windows 98 Second Edition
• Microsoft Windows NT Workstation 4.0 Developer Edition
• Microsoft Windows Millennium Edition

How to Set Up and Use SerialKeys in Windows:
http://support.microsoft.com/?kbid=260517

Best regards,

Luciano