Nobody seems to have offered a reply - so here is my two pennies worth! - at least it will bump you up the list.
I think that you will ahve to convert the files into a format supported by MM2. I am fairly familar with MM2 (but not using vob files!). A quick trip to google threw up this lot click here
Have a trawl through those and see if you get a result. I've had a quick look and it all looks very complicated!