While playing the game, press ~ (American keyboard) or \ (Italian keyboard) to display the console window console at the specified screen. Activate the following cheats by entering the corresponding codes, then press ENTER to resume the game:

CHEAT FUNCTION/(SCREEN) - CHEAT CODE
Extra money    (Rally league menu) - Cheat.AddCash([number])
All races unlocked (Single race menu) - Cheat.AllRaces()
All cars (Single race menu) - Cheat.SkipCarCheck()