Hello Jar Head 50,
Here in the USA, when a customer sees the WGA Notification that their Windows XP Pro installation is nongenuine and decides to participate in the WGA Genuine Offer and order the Microsoft Genuine Advantage Kit with Windows XP Pro, they receive a full retail license for Windows XP Pro. Compared to other types of licenses, full retail licenees are offered the most flexible license terms: they can move the installation from one computer to another.
So, if the license terms of the WGA Kit offered in Thailand are the same as those for WGA Kits in the USA, you would be able to install your WGA Kit's XP Pro license on your current computer, and then when you get your new one, you would be permitted to install this XP Pro license on the new computer; of course, you would have to remove the license from the old computer.
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