After unzipping the download cut/paste the aircraft folder B737D into FSX sim objects/aircraft folder.
Open the B737D folder and copy/paste the contents of the effects folder into FSX effects folder.
Thats it for the install, the cockpit switches for the lights on the aircraft do not seem to work correctly, once the aircraft has loaded into the sim you will need to press L this will turn all lights on then press ctrl and L to turn off the landing lights.
So to recap
all lights on/off L
landing lights on/off Ctrl and L
