Harold,
FSEdit is one of the worst pieces of FS software I've ever come across! I agree with CAFedm and have used AirEd for the last few years and would recommend that you stick with it.
The following might help you with setting the gear drag setting. If you look in section 1101 Primary Aerodynamics, you'll see a number of different sections: the first is Misc., the second is G limits, and the third is Drag. The third entry in this section is for Landing Gear, which for my FD for the 737 Experience I set at 66. To give you a feel for other settings, the default FS9 Cessna 172 has a setting of 14 and the default 747 is set at 51.
My advice? Double the landing gear drag figure until it makes a noticeable difference, and then tune from there.
Which plane are you trying to modify?
