scenery/flying helicopters

hello im just new to this website ive downloaded alot of scenery im just wondering cause i havent tried it yet what file under fs2002 do i put the scenery into i also downloaded trucks/ boats etc how do you place them in certain areas for instance how could i place the coast guard boat off the coast of Dublin in Ireland. Also i can fly any plane at all but i just cant seem to get the hang of helicopters any suggestions..thanks alot