I know with nero showtime, when I go to play a dvd off hard drive, I just select the VIDEO_TS folder to play (not any specific file within it, the entire folder). It automatically recognizes that it is a dvd and goes looking for the right files to play. Within that respect, it just depends on how well your player software is designed to deal with dvd's on hard drive. Those two folders are standard dvd format (you would find the same thing on an actual dvd disk). If you are using windows media player in vista, try opening the whole folder. If that doesn't work (not really sure what windows media player will do, I don't use it), you may want to consider a better player like windvd, powerdvd, nero showtime etc.
If you are talking about getting it to go straight to playing the movie without having to go through menus, agomes is right, it has to be re authored. Many programs, clonedvd, nero recode, shrink, dvd decryptor etc. have options to either just copy the main movie and or selective remove all the extras so there is just the main movie. I'm not sure about dvd fab platnum now as I haven't used it.