Press Enter during gameplay and type in the following:
Cheat Effect
I'mCheater Activate cheat mode
Ups... Damage enemy buildings
EagleEye Reveal map
ByeBye Destroy selected item
HastaLaVistaBaby Destroy all units
GoToHell Destroy all enemy units
MoneyMoneyMoney # Get money (where # = amount you want)
StrongMan Heal all selected units