I have a Pentium 4 computer and am receiving an error saying that my processor is not supported.
You will need to modify a line in the Alpha Centauri.ini that is located in the game folder. To do this:
Double clicking on My Computer
Double Click on the C: Drive (your Hard Drive or the drive that the game is installed to)
Double Click on the Program Files Folder
Double Click on the Firaxis Games Folder
Double click on the Sid Meier's Alpha Centauri Folder]
Double Click on the Alpha Centauri.ini File (The file looks like a read me text file with a little gold symbol on it).
Once the File is open Change the ForceOldVoxelAlgorithm=0 Line to ForceOldVoxelAlgorithm=1
Be sure to save your changes
Run the game
You may still receive the error message. If if occurs, click OK and the game will load fine.
(Taken from
www.firaxis.com)