There is better than PPCMRipper now.
If you want to extract the tracks, you can use DVDAExplorer ;
http://rapidshare.com/files/26919188...2008.07.21.zip
If you want to make an exact copy, you can use DVDFab in clone mode ;
http://www.dvdfab.com/free.htm
And you can read the page 21 for some explanations about exact copies.