Hello, I have a AMD 64 with Asus A8N SLI motherboard and Geforce 7800GTX graphics card. I am about to buy another 7800GTX to have them work together. Do I need other drivers when using two graphic cards together in SLI? The latest nVidia is 93.71 but I am still using a driver from the 70 series. I want to upgrade but do I need a completely different sort of driver? Thanks for your advice, Witchy.