I recently bought an Atari flashback 4 game console it only has a white and yellow plugins how can I hook it up to a Directv Box without having to buy an Rf modulator? Can anyone help with step by step including what setting on my remote and what channel to turn to. I've tried to plug the yellow and white into most of the connectors in the back of the box, also I have an older TV and I only have one cable hookup.

It needs to plug into the TV and not the DirecTV box. Yellow cable into Video In and White into the white Audio In plugs. The plugs on the DirecTV box are output.

I agree with odinn, you need to plug this directly into the TV. Hopefully the TV has Composite connectors (RCA Yellow and White)