Hello, i'm not that great with pc's so i need help. ever since ZA and ZG came out i can even run the instances cuz i get really bad lag. I have XP, 2.8Ghz, 3.25 ram, radeon 4300/4500 video card and use the catalyst control center. I dont know how to configure it so i dont get lag. I dont want to spend more money on a new video card if this one will do. can someone help or do i need a new card?