480p is not HD. 480p (both 480p60, 480p30, and 480p24) are defined in the US ATSC standards as ED (Enhanced Definition). (Folks who connect a converter-box (with the $40 US subsidy) to HDTV sets can watch all broadcasts as ED (4:3).) 480i30 (SD) is de-interlaced by flat-screen HDTV sets to 480p30 before being displayed. EDTVs display 480p fine, but they cannot display HD.  -Dawn  McGatney 69.139.231.9