download dvd shrink 3.2 , then download dvd decrypter , open dvd shrink and drag and drop the folder containing the vob files then click on back up, this will create an iso image of all the files, then the program automatically launches dvd decrypter and it burns the dvd , good luck

ps. the folder containin the vob should be Ex:Guns N' Roses - 1992-04-09 - Rosemont Horizon, Rosemont, IL[JohnM] ( then inside it has a 2 folders "DVD 1" and "DVD 2"), Drag and Drop the DVD 1 (contains Video TS) to DVD Shrink and it will preview in a little window the whole thing after it finishes do the back up etc. then burn the second DVD) that goes for all the others dvd i bet they have the same structure