How to unregister XP Pro?

I recently learned that I can not use the upgrade copy of XP Pro that I own
and used to upgrade from XP Home on my Dell Notebook computer. Dell is
sending me a full version of XP Pro so I can format and load it.

I registered the Upgrade version of XP Pro with Microsoft. How do I
unregister the copy so I can give it to my Brother since I not longer need it
and he currently has XP Home and an HP notebook?

Thanks
--
FL Consultant
.

Relevant Pages

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