I currently own a Samsung EDTV which is capable of displaying up to 480p. I have Time Warner Cable's DVR service. I recently found out that they now offer a HD DVR service. I was told by someone at my local home theater store (not BB or CC) that I could benefit from the HD channels because the box is able to output at 480p which according to the guy at the store is higher than what my regular digital cable is. Is this true? I thought I heard that regular digital cable is at 480i. The guy at the store said it was more like 325 lines. I would love to get the better picture even though I can't go all the way to 1080 or 720p with my TV. Thanks.