GeForce 6600GT Drivers

Ok /comp/. I want to ask you if I should update my drivers? I'm using a GeForce 6600(128MB DDR3) GT right now. I was wondering if I should update my drivers from the current ones I have, which can be found here: http://www.omegadrivers.net/  I had updated drivers before when I played FFXI, but the game lagged badly. I don't know if it was FFXI's support issues with the drivers or what, but it was slower than when I "downgraded" to Omega Drivers. I play World of Warcraft right now and I was thinking what would be better for that? The lag aint too bad, but maybe there could be less.

Should I update from Omegadrivers to official nVidia drivers? Thanks /comp/

I'm using the NGO Optimized drivers on my 6800GT and I'm damn happy with them.

Omega drivers for nvidia is actually older then the current ones release by nvidia