For starters, try downloading the latest drivers for your hardware.
They're no always the fastest but stable enough. Elsa has their own driver based on the Detonator 12.40 for instance on their website.
That's about it, if you don't wan't to fiddle around with overclocking and BIOS optimizations...
You'll have to optimize if want to reach the high scores... But to be able to optimize you need to be experienced, to be experienced you need to study and experiment.
There are plenty of guides and programs that will help on overclocking your CPU/Vcard out there...
/J
TBIRD 1.33@1.63
Asus A7M266
Vapochill
Elsa Geforce3
Apacer 256MB DDR266
Seagate X15