Didn't get any response to prior post. I have purchased a FDS Elec/Cab Unit and although really made well, I would like to use it with Marty Bochanes Prosim 737 as that program has all the variables.Anyone currently using this unit, and if not what would be the best way to proceed so I can complete my overhead. I see that OC now has the Elect 7 seg displays attachd to a PC board for 65 euros, and if I am forced to I will purchase it but what will I need to get it to work using Marty's program ? Thanks In Advance Dave