If you do, I have an app I'd like you to try out. It's a frontend to several programs, it should be able to rip dvd's, make iso's, and burn them back to dvd. Don't have good instructions for it yet, but it should be pretty easy to figure out. If you want to try it, download it at
www.thetechguide.com/downloads/dvdcreate.tar.gz. Put dvdbackup in your path (such as /usr/bin), then run dvdcreate as root (needs to be run as root, can't get it to burn right as a regular user). Also it looks for dvdrecord, either install that or install cdrecord-dvdhack and symlink dvdrecord to it. I've tested everything but the actual burning (on my laptop now) but it should work fine. Let me know if you have any questions/comments.