By definition if you're monitor has enough pixels, then it is HD. However, HD devices output their signal in a very specific format, for example in 1080 or 720 lines. If you're monitor is not 16/9 format or has no HDMI connector, it is unlikely it can set itself to these precise definitions, which results in moiré. It's a shame because many PC monitors have more pixels than HDTVs. If you buy a monitor with a HDMI connector, it should be HDTV compatible as these standards are linked. And you should be able to plug it to your console if it has a HDMI connector. And if you buy a bluRay drive for your PC it should work.