Sidd What u are trying to do is not useful in our case, the specs may change from pentium to C2D, from 512MB RAM to 4 GB... so in the case of integrated chipsets everything is variable, and there is no STANDARD to setup a configuration.
But all i can say i everytime u can disable: Physics Shadows Reflections smoke Light detail to min Vsync AA Anisotropic filteric bilenar Specular -- INTEL 9xx SOLDIERS SANS FRONTIERS
