i have an monitor NEC 42 model PX-42XM2GU , it does not have a tuner nor speakers no remote and also it has no RF input, but there is DVD input RGB input and HD input only RF input is not available in this situation i have a cable line to watch TV which is RF input.















how i can watch tv in that ?















how i can tune the chennel without remote ?















what i need for that ? what should i have ? what i have to buy