You do, in shrink go to reauthour DVD, then click the button to edit start/end frames. A new window pops up that lets you step through the film to where you want the movie to start/end. There is no reason you can't start at the beginning of chapter 3 and then end at chapter 5. If you want to copy all but chapter 5 you could set it to work 0-4 and then a seperate copy of the movie for 6-end.
Pain in the arse method, but should work.