I have 2 partitions, C and D. C is currently for my XP, D is for my files. I also installed most of my applications (office, firefox, GAMES, etc) in D. My question is, if I delete the XP in C and use it to install win 7, will it affect the applications on D? what would happen to each application's registry? would I need to reinstall the apps/games after I upgrade to Win 7?