Hello LindaPea,
My advice to you would be to return the item to the seller for a full refund. Assuming you are located in the USA, it would appear that the seller is selling you "gray market goods" that are intended by their manufacturer to be sold elsewhere besides the USA. A very large percentage of software sold by independent sellers on internet auction and sales sites is counterfeit software.
If you are buying from Buy.com, you want to purchase the correct retail licensed product from a trusted online vendor, such as this one:
http://www.buy.com/retail/product.asp?sku=20361036An alternative would be to purchase an OEM licensed product, such as this one directly from buy.com:
http://www.buy.com/prod/microsoft-windows-xp-professional-with-service-pack-3-license-and/q/loc/105/208018286.htmlOEM licensed products come with significant restrictions on their use and support in return for the lower price. OEM licenses are permanently tied to the computer onto which they are first installed and are not permitted by the End User Licensing Agreement to be moved to any other computer. Further, OEM products do not come with any sort of technical support from Microsoft, so you are on your own.
Regardless of what or where you buy, if you are in the USA, please purchase with a credit card in order to afford yourself the maximum consumer protections available to you.
For great advice on all topics XP, visit http://www.annoyances.org/exec/forum/winxp