First, you will need to hit the tilde (Shift + ~) key and type in "DebugMode 1" (case sensitive). Then hit the (Shift + ~) key again and press [TAB]. This should show you a list of the different functions available. Hit [TAB] again to scroll down the list.
NOTE: Codes are case sensitive.
Code: Result:
dm_god God Mode
GiveLevel X Adds X # of Levels to Your Char
dm_givegold X Give Gold Amount X
SetCON X Set Constitution to X
SetWIS X Set Wisdom to X
SetINT X Set Intelligence to X
SetSTR X Set Strength to X
SetCHA X Set Charisma to X
Note: On some of the cheats, it will simply give you a message saying "success" after you type the code and press [ENTER]. Other ones, such as the SetCHA will say "Entered Target Mode". You must click on your character to enable the changes to your character.