it's been a while since i set mine up, and i'm not at home where i can look at it. but, i think i ran a single standard yellow composite video cable from one of the receiver's video out jacks into one of my TV's 4 video inputs ("Video 3" in my case). thus, when i need to access mu OSD, i switch my TV over to Video 3 and then press the "Top" button on the remote to enter the OSD.
if i remember, i'll look at how i set mine up this evening and will re-post with additional info.