Can a HTPC be used as a scaler/de-interlacer for sources other than DVD? I have a pc with a video in/video out card, and wondered whether you could "improve" signal quality of , say a VHS video source by feeding it in the video-in socket and out of the PC via RGB to a progressive device, like a plasma or projector. This could easily be upscaled to 1024x768, or greater. Has anyone tried this ???