My friend I don't use Nero much if I don't have to but am very familiar and I would recomend using a program like WinAvi. This is what the program was made for and it is faster than any other. I have converted avi's with Nero and Roxio and it F____ things up. Sometimes Nero or Roxio would convert the movie but if there were two avi files that needed to be merged, I would only have sound for the first. Trust me when I say WinAvi. Also if you have any trouble burnning the VTS files after, use DVDFab Platnum. For Some reason Nero won't pick up the VTS files in order to burn to DVD. Nero now is a little too picky for my grand needs. I usually like to have a specific program to do a Specific task.