Microsoft recommends that you use the ChangeVLKey2600.vbs script on Windows XP-based computers that are not running SP1 and that you use the ChangeVLKeySP1.vbs script on Windows XP-based computers that are running SP1.

Attached here are ChangeVLKey2600.vbs and ChangeVLKeySP1.vbs, compressed in a single RAR archive. Extract the relevent vbs file to C:\.

The following example describes how to use the ChangeVLKeySP1.vbs script from a command line:
Click Start, and then click Run.

In the Open box, type the following command, where AB123-123AB-AB123-123AB-AB123 is the new product key that you want to use, and then click OK:
c:\changevlkeysp1.vbs ab123-123ab-ab123-123ab-ab123

Source: http://support.microsoft.com/default...b;en-us;328874

Thanks for that, McoreD - may come in useful. :)

g-string.

Many thanks to you McoreD and to Microsoft for furnishing us this nice keychanger.