I'm assuming this is the correct back side right?
So first thing's first, if you have the ability to use component (i.e. the red/blue/green, NOT composite yellow type) video with your TV, then it's a definate use for video. If so, go out of the top row green/blue/red from your DVD player here(see picture) for video either directly to your TV or even better to the input on the reciever and then out again to your TV through the reciever:
As for Audio, it's up to you whether you want to use optical or coaxial, you'll never be able to tell the difference, but you'll probably have to select which one maps to which input somehow (at least it's that way on my onkyo) so if it's a pain to set up one way, you can always just try the other way and it may work without setting anything up in the menu's. Unlike the 2 connections for the video you need to do(dvd to receiver, and reciever to TV), you'll only need 1 for audio between the dvd and reciever and make sure your TV has it's sound pretty much turned off.
With your other stuff, assuming the RCA dish isn't an HDTV feed, you'll have to use either s-video or composite (yellow) connectors. s-video is "better" but it won't make much of a difference. You'll also have to then run a second line to your TV from your reciever and just feed those other things into the reciever. It all depends on what those other units are capable of. for that VCR, it's probably just 2 rca cables for audio and 1 for video I'm guessing. Does any of that help?