hello!thank you for your help!Before I asked you, I asked VRInsight and the sailor where I bought the panel, and they both told me that I need a registered FSUIPC version-that's not a problem for me... I often buy addons to improve my FS9!!! The problem is: the VRInsight TTPanel is an ON\OFF switches panel with two positions for each switch.So, when I physically put a switch on "ON", it orders an action in FS9 (FOR EXEMPLE:activate fuel pump). When I want to de-activate fuel pump, I put the switch on "OFF"position, but there's no action on the fuel pump: I have to put the switch on "ON" again to de-activate(virtual action "off" in FS9).That's not logical, not practice,and it gives me a bad feeling to take me away from "reality".That's why I wish buy a registered version FSUIPC. I hope that it will correct the problem, and above all,I hope that it is not too difficult for me, to use fsuipc for programming the good parameters!!!