Unlimited Weapons:
 Open the file 'ww2.ini' and find the line 'Unlimited Weapons'. 
 Change the value 'no' to 'yes'. 
 
 Turn Spitfire into a Bird:
 Test fly the Spitfire in the museum. Drop both bombs and use all 
 the ammo, except for nine rounds. Then press Ctrl + A + E to turn 
 off the engine and it will turn into a bird. 
 
 3D Dynamics Editor:
 Ctrl + Alt + Y = 3d Dynamics Editor (place planes, 
 flak, etc.)
 
 Change Planes:
 While flying hold Alt and "P", you will be able to