I have Windows 7 Laptop with intel core i3

Manufacturer: Dell
Model: N5040
Processor: Intel(R) Core(TM) i3 CPU M 380 @ 2.53 ghZ 2.53 ghZ
Installed memory (RAM): 4.00 GB (3.80 GB usable)
System type: 64-bit Operating System

Windows rating Base score 3.4
Processor: Calculations per seconds - 6.7
Memory (RAM): Memory operations per second - 5.9
Graphics: Desktop performance for Windows Aero - 3.4
Gaming Graphics - 3D Business and gaming graphics performance - 4.9
Primary hard disk: Disk data transfer rate 5.9

can somebody give me css config for my pc so i cant lag and get good fps