Thanks for the advice....i should've been more specific though..I am looking for software that will back up my photos (to a dual-layered DVD so i have to use less disks) and also keep track of what has already been backed up and know which ones haven't. Picasa for Windows used to work pretty well when I used Windows, but the Mac version of Picasa doesn't seem to work very well for that (it starts burning a disk, then get 'stuck'.