Will San Andreas work on my laptop?

The Game would surely work, no doubt in that, GTA San Andreas runs on almost everything, but what you've to ask is how it'd run? and for that question, I think it'd run quite well. By what you have written, you have 2gb RAM, 1 gb graphics memory (approx) and 1.66 ghz. This should be enough to push GTA above 30 fps. Do get it and enjoy, its the best game ever.