The DVI input of the 42PD3000 is HDTV Compatable, as the input is digital, but the 1024x1024 resolution is NOT true HD, although it is so close, the difference is negligible. However, the pin arrangement is not DVI standard, and also includes a switching input. I use an HDMI to Hitachi DVI convertor box (which is NOT commercially available) which gets round this problem, and does away with using the AV box. The tested result is far superior to using the AV4 component input or VGA input on the AV box. I plan to connect the new Sony RDR-HXD910 DVD Recorder using the HDMI convertor box, and thus doing away with the Hitachi AV box, DVD Player, Video recorder, and Freeview box. Hitachi could quite easily produce a HDMI convertor box at minimal cost, but would prefer you to buy a new Hitachi plasma or LCD TV.