Just to add, Ive compared some of my scores as I have a GF3 also. Some interesting things from my last benchmark.
Due to problems with my XP1800+ the test was run with a FSB @ 130MHz (dont ask
My GF3 OC to 240/560 stock vanilla gf3 btw
same drivers 41.09
Your Nature score - 51.5 fps
My Nature score - 55.5 fps
All of the tests above the Nature test are much mcuh higher than mine, did I mention "much" higher
As for all the other tests they are much closer, this would be due to the limit of the card I guess, where as the other tests are more affected by the cpu.
This is my score I compared to