Ive been building up quite the iPhoto library, about 12,000 photos; and it will be growing much more as I just got a new camera. I always have the scary thought of losing photos, I need to start backing up my photos. I am looking for an application that will be able to do a backup of my photos to my external hard drive (160GB). My iPhoto library is currently just under 38GB. I would like to be able to plug in my external drive to my macbook about once a month and run some kind of application to backup my whole iPhoto library to the external... Oh and I would really like it to be a GUI, I don't really like working in terminal. Does anything like this exist?