I've searched around, and I couldn't find any issues on this, so I decided to post it up. If there was an issue like this, I apologize for reposting. I'm thinking about purchasing a new license for Window's XP Professional, but I'm not which one should I choose. There are some that say RETAIL is better and there are some that say OEM is better, so I'm at the point where I can't think anymore. If any one has an idea of which has a better worth of buying, please do share your idea. To me, I feel that both OEM and RETAIL are the same, since they function the same, by means of installing the OS Window's XP Professional. The difference that I could tell between them, or at least have heard is RETAIL can be used on more than one computer (one at a time, not simultaneously) and OEM can only be used on your computer that you have with the same motherboard and other devices. For some reason, I want to go for the cheaper, but the RETAIL seems to be like a nice back up, so I'm not sure about it. If anyone would like to share what they feel, please do, since I want to know quick. Thank you!