So has anyone installed the final windows 7 release? can you explain the install process over XP? Is an old XP disk needed? Does win 7 ask for your old XP serial key? Cant wait for the release this coming month, But I cant find my old XP disk I do belive I have the serial key some where though. I built my PC myself and didn't put the sticker on the PC case, but I think it's in my box of extra components.