Hi, I was wondering if there is any way to "rebuild the desktop" on DVDs, to make more room. I used to be able to do that with my old Macs and floppies. I tried copying a 4.7 GB home movie onto a 4.7GB DVD. The message said there was not enough room, and that there was only 4.23GB on the DVD. I know some room is taken up by formatting, but I was wondering if there is something else on the DVD, left over from previous tries to copy files to it. If that is not possible, what can I use to compress the movie? Will it automatically decompress if I want to view it? Thank you.