I want to buy a DVD burner and I want to know what to look for in a burner. I ask this question before and someone replied "what format are my movies" I don't know what format a movie would be from a place like blockbuster or Netflix. I’m looking at one burner it is a LG 16x USB 2.0 DL External DVD+RW / RAM Drive w / Lightscirbe. What does 16x USB 2.0 DL and DVD+RW mean?