Step 1: DVD Decrypter
Step 2: DVD Shrink
Step 3: Img Tool/must have nero 6 installed
You can skip the 1st step in most cases unless there is some sort of copy protection DVD Shrink can't handle
All of them are free w/the exception of nero but the trial version will work just need to have in it installed in some form you don't actual use nero directly. Nero 5 will sometime work and sometimes it will not play a DVD in a DVD player (computr use only)
Easiest way to back up any DVD and have it play in a DVD player even save all the extras of a dual layer disc with minimal quality loss,not noticable on a normal TV and you have to really look hard to see the compression on an HDTV.
Good luck hope they are "backups"