Ive been here before regarding problems with my iMac, so Im going to run the Archive & Install option soon, and I had a couple of questions. First off, I am backing up my iTunes and iPhoto library to an external drive just in case. So: 1. Do 3rd party apps need to be re-installed? If so, can I just drag them into my external drive, then just drag them back after? 2. Will iTunes still have my playlists/top rated songs, or do I have to do that all over again? I noticed the preserve option, so I see that I can back keep a lot of stuff like my favorites and whatnot, I am just looking for some suggestions or tips as far as what to do. The apps are not terribly important, but my photos and music is. Thanks for the help!