Read and understand about , REAL Digital Broadcast Tv Channels , Virtual Digital Broadcast Tv Channels , Analog Broadcast Tv Channels ,
http://forum.tvfool.com/showthread.php?t=695. Here are some tv guides ,
http://www.zap2it.com ,
http://television.aol.com ,
http://tv.yahoo.com ,
http://tv.entertainment.excite.com ,
http://www.titantv.com ,
http://www.tvzap.com. Most tv guides list the tv channels as the virtual channels.