Commandos 2 - Men of Courage:Official website. Promotional trailer, character profiles, tips, screen shots, and patches. [Requires Flash]
Adrenaline Vault: Cheat codes.
Cheat Code Central: Walkthrough and cheat codes.
Eidos Interactive: Official publisher's site includes information about the game.
Game Revolution: Cheat codes and level passwords. [Windows]
GameSpot: Information and screen shots.