for some reason im unablet o view certain .avi files... i can watch some .avi videos already on my pc, but for somereason, iv downloaded 2 videos that cant be played... iv tried all my media players to view them and they all say that the file type is invalid... have been told i need to downlaod a codec for them, so i downloaded the divX one, and still canna view them... any suggestions!?!?