I can get SD to fill the screen. Watched "The Hurt Locker" last night on DVD, it looked and worked fantastic. Do I need to change a setting? The only thing I can get the picture to do is to move up and down on the screen, and have only one bar across either the top or bottom. I must be missing something!
The manual I found online said that your remote should have a "WIDE" button on it. It should be below the numbers and above the "crosshair" that controls play/stop and all that jazz.
If you hit it a few times it should cycle between "Wide Zoom," "Normal," "Full," and "Zoom." For a non-distorted picture you should have "Normal" selected. My guess is that you do not.
This is strictly a judgment call as well; many of us here would probably tell you to watch in "Normal" so that you're getting the source distortion free and "as intended" on 4:3 SD content. I think the lion's share of us would tell you as well that widescreen movies, even with the bars below and above, is a vastly superior experience to watching stretched 4:3 SD content.
Obviously, however, it's your setup to enjoy as you please.