I wondering if there is such a thing. What i have is a tri-boot system (Win7, Vista and XP Pro). I have all my OSs on one hard drive and i have a second for games and some applications. What i was wondering is, if i installed a game or app through one OS, how do i get the registrys in the other 2 to run the same app with out taking the time to reinstall over the top? I know absolutly nothing on registry editing. I just had to do a reformat of my XP install and i don't want to take the time of having to reinstall everything if there is an easier way. Is there something out there thats like that and that's free?