i have a dv2000 laptop with a intel 956 graphics card. i would like to know why i can play half-life 2 on full settings with a good 60fps but i cant play others like hitman or doom3. even on low setting hitman and doom 3 run slow. what makes me more mad is that i cant even play old games like postal 2 on low settings. but half-life 2 can be played on high.y is this?