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 can not display HD Dawn McGatney 69 139 231 9