I was under the impression that : (1)- OEM software cannot be resold after installation under any circumstance, even by a Microsoft reseller. (2)- You can privately resell used Microsoft Retail products as long as you have uninstalled/deleted the product from the previous unit. I am curious, as I was following these guidelines, and attempting to sell three retail products that have not been in use for over a year (system died), and as the system in question has been replaced with a Vista Home Premium x64 notebook, it would seem to qualify to be resold to someone who wants it. Any ideas/links? There are heaps of these types of sales on Ebay (private seller / used retail software), and one would think that if Microsoft frowned on this, they would just shut it down, as they shut down sales of used OEM copies. Thanks!