if they are continuous chapters you can use dvd shrinks "start-stop" feature and rip the section you want from the movie. if they are separate chapters, you could do the same thing (rip one chapter and backup the start again and rip a different chapter). to join the different chapters for burning just open shrink, click on re-author, and use the dvd browser to drop each "movie" into the left screen and backup, shrink will join it all for you and output it ready to burn