Not enough info yet... First of all what kind of tv is it? I'm asking because I want to know exactly what kind of hookups it has. I can look up your Motorola box and I understand what you've said about your dvd player I think. Here's why I'm asking, to use 2 different things your tv has to have to different ways to input the video. You have a regular cable jack where the cable from the wall (or your box) screws on. This is called a coax jack. Most tvs have one of these. It sounds like you also have a set of rca plugs. They are the ones that are color-coded red, white, and yellow. Do you have any other plugs? Even if these are the only two, you should be able to use your Motorola and your dvd player I would think.
The Motorola should go into the coax jack and the dvd player would go into the rca plugs. To watch the tv your would have your tv on channel 3 (or sometimes 4) and use the Motorola's remote to change channels. To watch your dvd player you need to change the input on your tv. Usually by hitting "input" or "video" on your tv's remote. This should switch the tv to Video1 or Input1 and then you could watch the dvd player. (If you have more that those 2 inputs on your tv, it might say Video2, Video3, etc until you find the correct one.)
Clear as mud??
If you have more questions please ask.
