Hit CTRL+ALT+C and enter and type the desired cheat:

Code - Result
Delian Treasury - Add 1000 Coins
Ambrosia - Win Scenario
SoundFrags - Unknown Effect
Fireballs from Heaven - Strike a Particular Piece of Ground with Fireball
Bowvine and Arrows - Towers Shoot Cows Instead of Arrows
Cheese Puff - Dairy Workers Put on Cheese Suits