so when I do file: make movie: save to hard disk, a pop-up comes up that says that the format is “video for windows (*.avi)” the template is NTSC DV. Should I set the format to mpeg-2? There is also a small pull down menu to th side. The options are: cable, dsl, isdn, 56K, 28.8k, and 14.4k. What is this?