I recently purchased my first HDTV(thanks to help on here, Samsung 50" DLP). I have Adephia digital cable with the HD pack (something like 10 channels at most). Anyways, I first had it hooked up using component cables and all shows filled the entire screen(I know some were stretched). I bought an HDMI cable recently and hooked it up that way and now none of the non-HD channels fill the whole screen(which is ok) but also none of my local HD channels come in widescreen; only HBO HD, Discovery HD, ESPN HD, etc... My CBS and NBC shows that are broadcast in HD are square on both the non and HD channels. Anyone know why this is the case, do I not have something set correctly? Thanks.