I am trying out NFL Sunday Ticket and have an HDTV monitor, receiver & dish, etc. I receive HDTV ok. But regarding NFL ticket I read where the HDTV and Wide Screen Digital broadcastswould be on channels 70,71 & 72. I have the NFL ticket channels and I get the regular HDTV channels but I don't have 70,71 & 72 . Do they magically appear every Sunday or should I at least be seeing those channels listed on my program guide all the time, like throughout the week like the NFL ticket channels?