I would just hook up the dvd/vhs player with the red,white,yellow rca cables that should of come with your unit and just go to the input on the tv to watch your dvd/vhs player. This will give you a better picture and sound while allowing you not to have to watch dvd/vhs on a channel which helps make the dvd/vhs player independent. Also if possible I would hook the converter box up with the red,white, yellow rca cables to the tv as well if your tv has more than one set of red,white,yellow plugs since it is a better connection that coax and you probably watch more tv than vhs/dvd anyway. So bottom line try to hook up both boxes red,white,yellow and watch each box on different inputs instead of like channel 3 or 4. Also to record of converter box you can run coax from converter box to dvd/vhs combo and make sure your dvd/vhs player is on tuner input or channel 3.
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