HDMI Connections
Hondo,
Does your TV have more than 1 HDMI port?
If so, I would connect the following:
HD-DVD and BlueRay -> Receiver -> TV HDMI 1
Other Sources -> HDMI Switch -> TV HDMI 2
To get audio from the "Other Souces" use a digital optical or coax from the TV's audio output to one of the inputs on the receiver.
If you are don't need a standard DVD player, you could also use component video for the cable box and connect Digital Optical or Coax to the receiver.
If your TV only has one HDMI input, I would put the HDMI swith between the sources and one of the receivers HDMI inputs.
Get an HDMI switch with an IR remote and buy a Harmony or URC remote so you can program macros to swith the audio and video sources.