[lcaillo]

Scan conversion is always an issue. The question is which device does it better. There WILL be rescaling in the display, since it is 768. Generally, the display will have better processing than most cable boxes. It is usually best to set the box to pass through the native resolution of the signal and let the display deal with it. This avoids sloppy processing in the STB and multiple layers of processing. DVD players are more likely to have better processing, but you have the same potential issues. Overall, it is generally best to start with no conversion in the source and let the set de-interlace (if interlaced source) and resample (scale, convert) the image. Then start changing after you watch it a while on multiple sources and see what happens. You will likely see less artifacts and a better image with the STB on pass-through (if it has it enabled). The DVD player is a bigger question, as it is likely far better than the cable STB.