shilo,
Post your PC and video cards specifications. From your comments, it sounds like you have a lower end PC and video card. No one can help you if you don't post that info. The game is not going to be changed specifically tailored to your PC. But, with your PC specs we can help you get the most from it. Please run a DXdiag, save the result as a text file, and you can attach that to your next post.