I have to study the manual for REX-using. First I have to start REX, then the FSX, then the okay-button in REX... :-?. And what about flightplans? Are they mandatory and their saving too? The heaviest problem for me as a German: I have to change the properties in decimal-settings from German to US. So some signs will be changed then (dot etc.) So I don't know how it goes eg. in excel then and other programs.