Very laggy :(

[GeneraL]

Hello, i m installed gta:sa, when start played is verrry laggy i m changed resolution is little better but is still laggy.

My Spec:

DualCore E5200 @ 2,50GHz

2GB of RAM

nVidia GeForce 8400 GS 512MB

I was tryed to play with ENB but is laggy 10x worse then witouth

I m searched in nvidia panel to disable vsynce but i can't find

/I m now downloading newest graphics driver but tell me what can be except drivers.

Thanks