Decrypt vob files on hardisk ! please help!

I have been trying to solve this problem for a couple of days…please help !

I copied all the files from a dvd i rented from the video store onto my computer without decrypting. The Video_TS folder contains vob files as well as the Ifo and bup.

how do i decrypt this on to my hard drive. I dont have a dvd burner.

thanx

Cross-post and warez related. Thread closed. :cop: