You can set up the Guide to show the SD versions of your channels as well as the HD versions (e.g. it will Show HBO twice, HBO and HBOHD). Go to Menu, settings and help, settings, display, preferences.. then on "Guide HD Channels" select on "Hide SD Duplicates", then highlight and select "Show all channels". You'll get a message that it will take a few minutes to take effect, select "OK" then hit the "Exit" button on the remote. Next time you open the guide you should start seeing 2 listings for most HD channels (One wont say HD). If your getting the SFSS message, open the guide and see if theres a non-HD version of the same channel. If there is, change to that one and see if its coming in.