>Suppose you have:
>
>- an HDTV with at least 2 inputs (HDMI or whatever)
>- a PC with dual-monitor support
>
>Suppose you hook up the two PC monitor connections to two of the HDTV inputs.
>
>Can a typical HDTV be configured so that:
>
>- one of the inputs displays full-screen
>- the other input shows up Picture-in-Picture (PiP)?

NVidia - yes. There is a two screen option in the utility app that comes with the graphics card. I have a 32 inch Viewsonic HDTV that I use for a monitor. I had it on HDMI for a while, but IMHO VGA is better. And for some reason or other, I could not re-size fonts when using HDMI