We recently bought a Vizio E500I-A1 TV. We are trying to use our Playstation 2 to watch a DVD and having some trouble. We connected the red and white audio cables to the TV from Playstation and got audio no problem. However, there seems to be no spot for the yellow video cable. Instead, there is a port that says "optical" and another port that is labeled green. If I put the yellow video cord in the green port we get a picture, but it is black and white. The yellow cord does not fit in the "optical" port so this is our only option right now. Do I need a different type of cord? If so, what is it called?