I've got an *.avi Xvid thats in two pieces. It also has *.sub and AC3 5.1. I want to join the two pieces, add the *.sub with Ac3 5.1, and convert them to one DVDR. Each of the *.avi is about 700mb and aspect ratio is 640x352. I want to have all of these features and I can't find a guide to do it. Does anyone have any ideas or know of any guides to get this done?