RipTheDVD

Start DVD-decrypter. It should automatically find the DVD-player of your system and generate an output path. Select Mode->IFO. Then in the right pane of the window select the program chain that corresponds to the movie you want to rip. 99% of the time it is the longest chain, and it should aslo have been auto-selected by DVD-dectypter. Then click on the DVD-disc at the bottom of the left pane. In a few minutes you will have the required vobs on the HD.