Yes, it is saying you should extract the zip file you downloaded and put the file that is called cvcoregamedll.dll into C:\Program Files\Firaxis Games\Sid Meier's Civilization 4\Beyond the Sword\Assets\ and overwrite the file that already exists in there.Ya I did read it but the problem is I don't really understand it. Is it saying I should save it into a different folder other than Patch folder?
Your patch directory is not doing anything. It is just there to save the downloaded patches so that you do not need to download them again if you want to reinstall the game. The official patches automatically extract all their files into the correct locations, this unofficial one needs a tad more user input