hey man I'm using the ones that came with my card GeForce 2 mx, but i have only had the card a week and i have noticed a few slowdowns on certain programs I need to update to the latest one's but just haven't yet.
You have to check out some of the beta Detonator drivers at the website listed below. I'm currently using the latest 12.40 "leaked" drivers (these are not official yet). These are giving me the best 3Dmark2000 benchmark scores so far of any I've tried. I think you have to use DirectX8 for the Detonator 10.xx drivers or above. At least go with the nVida 7.78 WHQL if you want to use certified drivers.
I am using the Herc's....i have tried alot of different drivers...the one that comes packaged with the card.."bites" in my books. I am currently using the 12.00 drvrs(WHQL) under WinME. NO probs or glitches.. Ran both 3DMark2000/2001...with very good results...and very good fps's. I'd say give this one a shot.