FixVTS is one of the software pieces you will need to run RipIt4me. Download it, place it in a folder somewhere, tell RipIt4me where that is. http://forums.afterdawn.com/thread_view.cfm/360110 Checkout the above thread.
Search the forum threads for saw 3. You should find specific guidance there. I have not tried this movie (have not even seen it).
Try reinstalling RipIt4Me using the INSTALLER from the download page. It will give you all the correct settings.