Unlock Cheat Mode:
Pause the game and press: R, R, L, R, L, L, R, L, R, R, L, R, L, L, R, L.
Now these cheats will be available from the Options menu:
Cheat Win, Clear Fog of War, Enable All Levels, Gimme $10,000, Player Invulnerable, Show LZs & Toggle Unit Spying.