Ok, I just bought a new RP91, and have a Toshiba 50H81 HDTV. I put the player into progressive and set the 4:3 mode to Auto. I leave my TV in Full mode - 4:3 discs are shown properly with black bars at the sides (replacing the light gray ones the TV set would provide). I thought non-anamorphic wide screen would be stretched by the player to fill the screen width-wise with this setup, but it doesn't for me - it just sticks the letterbox picture inside a 4:3 rectangle retaining the black bars on the sides. There seems to be no difference between the Auto and Shrink settings in the 4:3 menu. Tried several non-anamorphic wide screen discs including Charade-Criterion, Invasion of the Body Snatchers (1956), and several others. Am I doing something wrong, or is my conception of what it's supposed to do incorrect? Any help would be appreciated. Thanks.