Civilization III: Conquests Cheats for PC
Usually when playing a game with King units (Regicide, Mass Regicide, etc.), the units are the leader of the nation you are playing (America would have Abraham Lincoln, England has Queen Elizabeth, etc.). On Elvis Presley's birthday on January 8th, play a game with King units and all the King units turn into Elvis.
Ask a rival leader for a deal of 999999 (the maximum number of digits) gold per turn.
Regardless of what you give in return, they will give you the cash.
Note: This was fixed in the V 1.19 patch, but should work for all earlier versions.
These cheats should work.