[Robinson_A]

You're going to want to buy a receiver that can switch between and upsample via its HDMI inputs. Most new receivers will do this no problems up to 1080p. You'll want to plug all your sources directly into the receiver via HDMI then send a single HDMI cable to your TV. Most receivers have better video chipsets in them than your TV so you'll only help your video quality by passing the video (and audio) through the receiver. All cables go into the receiver with a single HDMI cable going from the receiver to the TV for a cleaner installation.