Advertisements I've been following these threads and am totally confused. I have Comcast SFL. I receive 5.1 (NBC), 12.1 (CBS), 25.1 (ABC), and 29.1 (FOX) on my QAM TV. These are 431,432,433,and 434 on my SA 8300 HD/DVR. Does this mean without a cable card I won't be able to use TIVO functionality because there will be no associated guide data? If not, can I use just one "M" cable card rather than 2 "S" cards? Thanks for your help. By the way, here's a transcript of the LIVE CHAT help I just received from Comcast: Problem: Is the new "M" cable card available in Delray Beach, FL? End Session user Robert_ has entered room robert(Wed Oct 3 11:48:19 EST 2007)>Is the new "M" cable card available in Delray Beach, FL? analyst Graham has entered room Graham(Wed Oct 3 11:48:30 EST 2007)>Hello Robert_, Thank you for contacting Comcast Live Chat Support. My name is Graham. Please give me one moment to review your information. Graham(Wed Oct 3 11:48:37 EST 2007)>I do apologize but I am only able to assist with the High Speed Internet Service. For issues with your Cable television service or account, I will have to transfer you to our Cable TV support chat. It will take just a moment, if you would like me to transfer you. Robert_(Wed Oct 3 09:47:25 EST 2007)>Please Graham(Wed Oct 3 11:49:07 EST 2007)>Thank you for contacting Comcast. Have a Great Day. analyst Jovelyn has entered room Graham(Wed Oct 3 11:49:28 EST 2007)>Please wait, while the problem is escalated to another analyst Jovelyn(Wed Oct 3 11:49:37 EST 2007)>I will be happy to assist you with your questions today. Jovelyn(Wed Oct 3 11:50:12 EST 2007)>Thank you for contacting COMCAST. My name is Jovy. How may I help you today? Robert_(Wed Oct 3 09:48:54 EST 2007)>Is the new "M" cable card available in Delray Beach, FL? Jovelyn(Wed Oct 3 11:50:44 EST 2007)>I will check on that. Jovelyn(Wed Oct 3 11:55:55 EST 2007)>Thank you for waiting. Jovelyn(Wed Oct 3 11:56:22 EST 2007)>Are you referring to Mitsubishi Cable Card? Robert_(Wed Oct 3 09:56:06 EST 2007)>No, the original cable card is an "S". The new multistream card from SA or Moto, is an "M". I need this for my TIVO HD. Otherwise I have to use 2 "S" cards. Jovelyn(Wed Oct 3 11:59:11 EST 2007)>I apologize I don't have much information about Cable Cards. What I can do is give you the phone number of the nearest local office so you could check it with them. And I thought I was clueless!