I recently got comcast and the guy onlu hooked the comcast and the tv together. the problem that i am having is my tv is super old and doesnt have any of the (white, red, yellow) plug ins. is there anyway for you to plug the dvd player into the back of the comcast box and have that run it through to the tv?
I have seen a gadget at either Best Buy or Walmart that allowed you to plug in your devices and basically convert it to coax into your TV for just this problem. I remember thinking it was reasonably priced (maybe $20-30). I don't have any idea what it was called but it should be exactly what you need. Good luck!