Anyone Watching Hi Def Cable TV on a Projector?

I just bought an HD DVD player and got it connected through my projector and I was floored by the picture. I am able to get 1080i resolution. Stunning. It is connected via the component video inputs. I'm wondering if I'll get similar results on the projector with the component video connections if I ordered Hi Def cable tv. I currently have satellite tv and I don't have hi def service...it looks muddy on my projector.

..thanks for your help here.

mitch