Unfortunately Home is considered a lower tier product from Pro. It's
not possible to downgrade. You'll need to do a fresh install and back
up your personal data beforehand. You can use FAST ( Files and
Settings Transfer ), but it's sometimes unreliable. Just make sure that
whatever type of backup you perform the data is verified. This helps
ensure that when needed the data can be recovered.

The other issue is a fresh install will cause you to loose any OEM
installed apps on the notebook. Hopefully you have installation media
for all your applications.

"Max" wrote in message
...
Have a laptop on which I am now getting the message that Windows XP
Professional is not genuine Microsoft. Have been getting this for about 3
weeks.

Have purchased Windows XP Home. Can I install this onto the XP Pro laptop?
If so, are there any special things I should do? Should I use Control
Panel/Add Remove Programs to remove XP Pro and then use the CD to install
XP
Home? Other methods will be appreciated.

Thanks in advance.