i want to burn a movie i have to a cd-rw. the cd i have has memory of 700MB/80 min. and the movie is 699MB so it will fit. the movie is in .avi format. when i try to copy it i open the movie in windows media player and select copy to cd or device. then roxio pops up saying that will burn it to a cd for me. but it also says that the file format is not supported for burning.it's .avi should i just change the format with WinMPG converter and what should i convert it to?