Hi. Thank you both for the tips.
I use GeForce 8600 gt on an Dell Inspiron laptop. Following your advice I create a profile specifically for SH3 with anti-aliasing option turn on at x16 (the highest number). Now it looks much much better. I know SH3 is an old game, but I know it can be better!

Most game I played have in game option, but not SH3.
Thx for the tips.