I'm saying that the error code you're having has nothing to do with any different kind of wire. ^_^ It is a communication fault with the directv servers. It will do it whether or not your cables are connected. (except the directv cable from the wall of course)
I suggest you unplug it for at least 5 minutes and check again. If it still gives you an error code, call DirecTV themselves.
As for cables, just connect the TV with any available wire, such as HDMI or Component. HDMI is the ideal cord for your TV.