shoktek

Hey everybody... I've got an old copy of Visual Studio 6.0 Professional which has been sitting around for several years. I have been looking to sell it on eBay, but have no idea if the product has been registered with Microsoft already or not. Is there any way I could find out whether or not it's been registered, and if it has, would I still be able to sell it to someone, or am I stuck with this expensive software that I will not be using? Thanks in advance for any insight on this matter..