I understand that in the ISO mode you can read and write a dvd under 4.7 gb. If it is over that you have to do all the editing steps. In the IFO mode just the main movie is selected (Casablanca: ISO:6.6gb, IFO:3.9gb). How can I just burn this? I tried this once with Nero 5.5.6 and couldn't get it to work. Am I overlooking something or doomed to fail?
I'm not sure if this will help you, since I don't have much experience in the whole DVD writing field, but try a different program that is actually meant for writing DVDs. Padus Disc Juggler isn't bad.