Tim6, Welcome to the forum 1. Use Newest version of DVDDecrypter to rip to HD and then compress the movie or use AnyDVD. You could have done a search on that title and it would have told you the same thing I just did. Just remember the search option at the top of the page is your Friend
Type in "The Forgotten" in the search fundtion at the top of the page and you will get numerous "hits" from the last couple of weeks dealing with how to copy this movie. It has literally been beaten to death and "forgotten". My short answer is: AnyDVD and CloneDVD 2.
You can use the newest version of DVD Decrypter and rip to your hardrive, use DVD Shrink to compress, both free, you should have no problems. Or try the trial versions of Any DVD and Clone DVD2 available at the Slysoft site. For further guidance try this site http://home.comcast.net/~bbmayo/