Hey Matt,

Sorry to be picky from the git go, but the "tuner" is the am/fm radio section of your receiver or pre-amp. Folks is very easily confused by such innocent miscues.

On to your problem. How many video inputs does your TV have? And is your objective to only use one input?

You could run your DVD to the S-video input then put the other two sources into a second composite input. All through your receiver, of course. As long as you're not in the same input, on the TV, you shouldn't have a problem.

Now as to conversion hardware, check out the thread zeke mentioned. Go to the first page then click previous once, the thread is near the top.

Paul