Hi,
From DVDVideoSoft, download free studio manager.
http://www.dvdvideosoft.com/products/dvd...
Then install and open up studio manager under the DVDVideoSoft folder in your start menu. Go to the DVD tab in the program and select "Decrypt and save DVD to PC".
It might have you install another (more specific) program to decrypt the dvd, but that is free as well.
Hope it helps.
Mutley