im probably being a little too over cautious here, but ive had my computer for almost a year now and i think it needs a good cleaning. I have so many little files and such scattered all over my hard drive from old programs i've installed, that its really starting to take a toll on my hard drive space. many times have i seen it say "Zero KB Available"... which is definitly not good. now, I certainly dont feel like going through and deleting all those old preference files, so I want to try a clean reformat. now to my questions: how do i properly backup important files like my keychain, or my bookmarks, or anything else that should be backed up (besides the basic stuff like my documents, my music, my pictures...etc, thats already good to go). basically, im ready to start new again, slowly install my programs again... and i guess just play it by ear from there. so, if you have any tips or information to share, please feel free to post, even if its something simple like 'make sure to backup this file to make your life a little easier'. thank you for dealing with my over-cautiousness.