Don said:
The pack stops installing, with error message the product
key used to install Windows is invalid.
Error Message: The Product Key Used to Install Windows Is Invalid
http://support.microsoft.com/?kbid=326904
When you install Windows XP SP1, you receive:
The Product Key used to install Windows is invalid. Please contact your
system administrator or retailer immediately to obtain a valid Product Key.
You may also contact Microsoft Corporation's Anti-Piracy Team by emailing
(e-mail address removed) if you think you have purchased pirated Microsoft
software. Please be assured that any personal information you send to the
Microsoft Anti-Piracy Team will be kept in strict confidence.
If the key that you used has been blocked by Microsoft, you will receive
this error.
Microsoft recommends that you purchase a valid retail Windows XP product.
HOW TO: Change the Volume Licensing Product Key on a Windows XP SP1-Based
Computer
http://support.microsoft.com/?kbid=328874