If satellite TV is providing a Dolby Digital 2.0 source (which is normally the case because it takes less bandwidth than uncompressed PCM stereo), then 5 Stereo will not be an option - 5 Stereo only works with analog or PCM digital sources. You may be able to change the satellite receiver to output PCM instead of Dolby Digital, in which case 5 Stereo would be an option offered by pressing the "STEREO" button on the remote a few times, but that will also deprive you of Dolby 5.1 from any HD stations (assuming the satellite box is HD-capable).