What equipment do I need to experience Comcast's HDTV service?

In order to experience Comcast's HDTV service, you need an HDTV cable box that enables you to receive and watch HDTV programs. Comcast will provide this box for an additional monthly charge. In addition, your TV Set must be "HD-ready" or "HD-Capable." Most standard TVs have 525 horizontal screen lines with the screen itself having a 4:3 ratio of width to height. High-definition television sets, by contrast, get their better picture by having either 720 (720p) or 1,080 (1080i) horizontal screen lines and a 16:9 ratio which allows you to view a larger area than traditional programming. Refer to your TV set's owner's manual for reference to 1080i and 720p. To learn more about HDTV service and to access pricing and packages for your area, go through the link http://www.comcast.com/corporate/explore/dc/the-science-of-hdtv.html