1. Install the latest drivers for your video card.

  2. Make sure all your computer hardware meets and surpasses the minimum spec stated on the box.

  3. Contact the help email address/phone line for the game -- there should be one on the box. There's no way we could know, but they might. You'll have to give them an actual error message though instead of the ambiguous "It's not working!" you posted here.

  4. This isn't related to programming.