Installing the Trainer
Download "Combat Wings: Battle of Britain Trainer" from CheatHappens.com (see Resources). The program downloads as a zip file. Extract the file and double-click on the executable file to run the trainer program. It's just one file and doesn't install. Just run the trainer before launching the game.
Accessing Cheats
Open the game by clicking "Start" and typing "Combat Wings" into the search bar or by clicking its icon on the desktop. Make sure your speakers are turned on. At the main menu screen of "Combat Wings," press the F1 key. Listen for a voice to say "activated" and then press the appropriate key on the keypad to activate cheats.
Trainer Cheats
There are eight cheats accessible through the "Combat Wings: Battle of Britain Trainer." Press the corresponding number on the number pad to activate the following cheats: press "1" for infinite health, "2" to never overheat, "3" for super plane handling, "4" for infinite rockets, "5" for faster rockets, "6" to not take damage from enemies, "7" to give health to targets and "8" to drain health from targets. You can customize the cheat keys through the trainer program.