yes, it doesnt seem to work with sp3, which just came out a few weeks ago. I think those steps apply to sp1 or earlier
Main Topics
Browse All TopicsI would like to change the Windows XP Product Key. I was able to use microsoft key updater tool with sp2 but this does not work with SP3.
Do you know of a product key changer for sp3?
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
This is an approach I have taken on Windows XP before. You can use the sysprep utility to reset the GUID and force the minisetup to run again next time the system boots. The Minisetup will ask for the product code.
Something to watch though, if, for example, you have used a Volume Lisence installation CD and are attempting to use an OEM product key, it probably won't work.
Instructions can be found here: http://technet.microsoft.c
You want to use the "To manually restore the computer to an enduserready state with Sysprep" section of the document.
Business Accounts
Answer for Membership
by: paulop1975Posted on 2008-05-12 at 14:53:21ID: 21550816
Have you tried to folow these steps? nge_the_se rial_in_wi ndows_xp.h tm
http://www.petri.co.il/cha