Until the Series3, CableCARDs were only seen in high end HDTV sets. CableCARDs are used to decrypt digital channels. Until today, July 2nd, cable companies used their own proprietary cable boxes to do the same function. All new boxes from the cable companies will have CableCARDs in them. It's not a new technology really. It was just a technology not used heavily until the Series3 came out, thus the lack of experience with installation by the cable techs.