DVI Connections

I am probably missing something very basic here but it is escaping me at the moment. I currently have a Denon 5900 that I have connected directly to the TV with the DVi connection. I am ready to get the HD setup now from direct TV, but it is my understanding that the HD signal needs that input on the TV as well. How do I connect both components to the TV? Again, maybe I am just spacing out on this one, but I figured I would ask.

Thanks