To me there are no secrets (except cheating, but I don't want to know anything about that).
Anyway here are a few things that might help:
High FSB
Memory timings (I had 384MB @ 3-3-3, got rid of 256MB and ran my 128MB Mushkin Rev.3+ @ 2-2-2...gained ~800 points).
Turn off Fog.
Set everything to Performance instead of Quality....DUH.
Use a crappy OS like 98 or ME (XP didn't work for me...haven't tried 2K yet).
Try different drivers (40.52 worked best for me...on ME).
Try different BIOS settings.
Keep trying, I've spend 2 days to get in the top 10 (keep in mind I'm ONLY running @ 140FSB and I'm surrounded by guys/gals running @ 150+FSB...I didn't look at all of them but the guy above me is running @ 158FSB and the ones above him are running @ 160+FSB).
What I'm trying to say is that there's NO such thing as a perfect setup, perfect drivers or whatsoever.
YOU need to find the 'perfect' settings yourself, for YOUR particular setup.
I'm VERY happy with my card, hell look at my score and my FSB, I'm kicking major ***....IMHO (considering my LOW FSB).
10449
Compare that with ANY cely upto 1800MHz and a Ti4200, and I'm still in the top 10.