l apoligize Gilly...l'm just a little "miffed", at this 03 DVD NAV "thingy"...l have a 99, which l retro-fitted with a 00 MCS, and 03 DVD NAV, so l don't have a Tele-aid button....As well, l have not been able to find this option to where l can check how many satellites are being used....l don't think l have it....Though, threw our discussions, l assume that it is the GPS antennae...Great, another $400.00 bucks.....