Your system is not going to run this game very well at all. Your video card does not have enough power, and 512mb of RAM is not nearly enough for this title. On another forum, they said that the minimum system requirements were not adequate, and the recommended system requirements for this game should be considered the absolute minimum. I am running an AMD Athlon 64 3000+ @ 2.48 GHZ w/ 1GB RAM and a GeForce 6800GS 256mb PCI-E @ 500 MHz core speed and 1175MHZ Memory speed, and I am only getting 30-35 FPS. You should upgrade your system before attempting to play this game.