OK, I have a very similar situation. As far as I know, receivers don't do anything with the video signals. They are mainly for audio only. So I have not passed any of my video signal thru the receiver. Here is what I have done:
Cable box video out -. to the DVD recorder video1 in
DVD player Video out - to the DVD recorder video2 in
DVD recorder video out - to the Television
All audio out - to the receiver and
receiver audio out - to speakers
As jetyi suggested (I learnt from him

), you can connect the DVD player video-out to DVD recorder video-in thru a Sima, which helps you eleminate the copyright protection. I have seen that not all DVDs have this copyright protection. I have already recorded DVDs of Terminal, Friends, Tom and Jerry etc... without using the Sima and it works perfectly fine.
Kiran.