...because talking about copying/ripping retail copyrighted DVD's would be against forum policy, try doing a search on Google for "DVD Shrink" and "DVD Decrypter" which should be able to rip the file to your hard drive. Then I believe you'll need a DVD emulator to be able to play it while it's on your hard drive. Still, much of this would depend on the size of your hard drive, etc.

Hope this helps.

Grif