Need for Speed Carbon... i really need help

[starforce hater]

first of all sorry for starting new thread......

I'm a nvidia 6200 256mb, I'm just wonderin why does every tym i activate the shader even in medium, the game starts slow its performance, really annoying..... i dont know how to fix this problem, I upddated my drivers and have the latest forceware, but nothing really happens

so if if some one had experienced this problem and have already do something, share me the solution, will be a great help

sys specs is:
P4 intel 3.0
1 gb ram
nvidia 6200a 256mb