I recently bought an HP “Media” PC [9040] with NVidia GeForce 8400GS which has DVI, S Video and HMDI out. I have an HDTV connected to the HMDI and 2 PC monitors connected to the DVI via a Matrox Dual2Go.
It works. The HDTV shows the PC desktop, it is an extension of the desktop–you can drag windows onto it. I use it to play AVIs I edited and then rendered in Vegas, or I can undock and drag the Vegas Preview window there. I’d rather have HDMI TV out from the PC for viewing stuff I’ve edited so I can see my work as pure TV, closer to the way my intended viewer will see it via DVD, but at least this is on a $1000 PC with an external add-on [Dual2Go] without cracking the case. Sometimes there seems to be issues with the NVidia recognizing that the TV is there. Perhaps If I remember to turn on the TV before turning on the PC . . . .. When it doesn’t recognize it, I have to open NVidia and drill down to re-set the multiple display feature.
I’m interested to see what HD looks like with this method when I get an HD cam. [Maybe a Sony HVR-Z7?]