Microsoft published changing the product key legally document. And method can be applied to listed below operating system.
| • | Microsoft Windows XP Professional |
| • | Microsoft Windows XP Professional |
| • | Microsoft Windows Server 2003, Standard Edition (32-bit x86) |
| • | Microsoft Windows Server 2003, Enterprise Edition (32-bit x86) |
| • | Microsoft Windows Server 2003, Web Edition |
| • | Microsoft Windows Server 2003, Datacenter Edition (32-bit x86) |
Here is the document, easy to apply. Good luck;
http://support.microsoft.com/default.aspx?scid=kb;en-us;328874
