Hi there, Do you want to add subtitles to the .avi so you can watch the .avi on your PC (Or Divx DVD Player) or because you will convert this .AVI to DVD format ? If you are going to convert the .avi + want the subtitles, have a look at DivxToDVD: VSO DivxToDVD v1.99 Pre-Release will: - Convert all your internet movies (.AVI / .MPG etc..) to DVD Format - Add subtitles (using .srt files / More formats to come in future releases) - Add chapters to each files - Create a menu (Menu entry for each file, based on the filename, for now) - Burn your DVD creation to media, with it's own built in burn engine