3401m and sata

Recently built one with 120G and 160G sata drives. Everything worked fine until I upgraded my ATI multi media drivers. Kept rebooting, unable to unistall drivers or reinstall new ones so I thought that I would format.

I remember reading that some people have got hold of sata drivers which they used when installing XP. I did not have any drivers so when XP asked for other drive configurations I just carried on regardless and it worked first time.

Have I reduced my performance by not loading these drivers and can anyone point me in the right direction to obtain them if this is the case, so I can use them before I format.

Thanks in advance