I bought an amd althon 3400 Cpu and its not cooling the way i want it. its probably the cheap retail heatsink. I have the Antec Super LanBoy Case which is a good case with good airflow. It has 2 120mm fans. The front one blows in the case while the back one blows out. I want to add another 120mm fan to the side of the case so air will both on the heatsink. How can I do that? Below are some case pictures.