afterburner effect/engine smoke and Aircraft.cfg

hey, im almost done here with my project, and im wondering how to add afterburner flames and engine smoke to my model, i want the flame to come out when the engine is on at full throtle, and the smoke to be on when the engine is on, if posible. i want to add these effects as separate *.fx files entries on the CFG file, but i dont know how to do it.
little help please???
little help please???