HELP! HELP! I have a dvd recorder that I want to connect to my cable dvr.I have triedvarious hook ups and all I get is a scarmbled picture no sound.my TV is an older model with no s video.I need answers in plain terms. I am electronically challenged.I know this can be done,I had it hooked up before but didn't write it down and CAN'T remember.PLEASE HELP ME THANKS