Clone the disc(s), install from Alcohol 120%, run a program called AntiBlaxx to hide Alcohol and Clone CD from Civ4's ridiculous copy-protection/piss-you-off software.
Run game via Antiblaxx.
Then, prepare to solve all the other problems that will arise once you start the game
Run game via Antiblaxx.
Then, prepare to solve all the other problems that will arise once you start the game
