Hey, I just downloaded a video that's a .avi and when I try and play it in Quicktime I get the white screen but no picture but the sound is still working. Tried going under Window and seeing what codec it is but it says unknown though before that is says 552 x 226. I'm using a G4 AGP graphics system and this is the first time I've tried playing a video on it. I have Quicktime 7 and all.. Anyone have any ideas? Thank you!!!