Did he leave the component cable that came in the box with you? If he didn't go purchase one at any big box store. Now plug the component cable into the 811 going color for color (red, green , blue). Next plug the other end into the Mits, going color for color. The 811 doesn't have H and V and it doesn't matter. Now plug a red and white audio cable into each unit. Make sure that you plug the audio cable for the Mits into the same input as HD input.
Turn the TV and receiver on. You should get a picture and sound. If you get sound but no picture it will probably be the 811 set at 720P (the early ones came defaulted that way). If this is the case, you need to add an S-Video cable to a different input and change your TV input to that selection. Now, change 720P to 1080I. You do this by pressing 6, 1, 9 on your remote.