I have followed the instructions from the RCA DVD recorder and the Mistubishi DLP HD DVD TV to correctly connect HD TV, HD Cable box and DVD all in one, but when everything is connected, I can't get my DVD recorder to find the channels that my Comcast HD Cable Box has. I have up to 500 channels, but the DVD recorder only goes up to 99. Even still, it won't show the cable channels, but basic cable channels like 4, 5, 7 and 9....with a lot of fuzz in between. Recording in HD isn't that important, but I just want to be able to record a channel from my cable box to my DVD recorder? I once had a basic cable box that only went to 99, and it worked perfectly. The HD Cable box is the problem I think. Can anyone help me please. I'm 2 seconds away from calling geek squad and wasting money that I don't have to. Thanks in advance.