This may or may not be of any use, but as far as editing the alphacentauri.ini file, mine didn't appear to have any "ForceOldVoxelAlgorithm" line to edit at first, either. I patched the game and tried to make the suggested change, only to find that no such line existed. I then tried to run the game, only to get the "CPU not supported" message. Game crashed, and I decided to try to edit it again. It was only after patching and trying to run the game on my computer that ForceOldVoxelAlgorithm=0 appeared in my .ini file. At that point I made the change to "ForceOldVoxelAlgorithm=1," and the game has run fine. I still get the "CPU not supported" message every time I try to play, but it runs fine after that.
