There's an aspect ratio button on the 4805 remote. When you're watching 4:3 content, you can switch between the different aspect ratios of 4:3, 16:9, letterbox, and Native. 4:3 will show 4:3 content in the middle of your 16:9 screen with bars on the side. 16:9 mode will stretch the image to fit the whole 16:9 screen, making everything seem wide. Letterbox mode will zoom in on your 4:3 content and crop off the top and bottom but it will fill the whole screen.
You will need an hd box that will have component or dvi/hdmi outputs (pretty all do). If you connect hdmi/dvi from your box to the 4805, you will need an dvi/hdmi to m1 adapter. Component should work fine.
You will need an hd box that will have component or dvi/hdmi outputs (pretty all do). If you connect hdmi/dvi from your box to the 4805, you will need an dvi/hdmi to m1 adapter. Component should work fine.