I downloaded the COA PIC and everything seems to be working fine except it doesn't seem that the 767 FMC is programed to function and give me correct data outputs for the 757 can someone please help me with my problem. I want to make the 767 FMC compatable with 757 aircraft.

Nope, simply put, not possible. Well, I suppose it's possible, but would require a whole re-write of the FMC, which really isn't practical :-)Ryan-Flightpro08 :-coolTaxiwaysigns.com