I have a Asus P5Nd2 Mobo with a Evga 7600GT 256MB in SLI mode with a Sparkle 7600GT 512MB video card. Hardware Specs 450W power supply (generic and gonna be replaced) 2GB Corsair ValueRam EIDE Harddrive (yea I know SATA is better) Windows XP Home SP2 Heres my what Happened I had the Sparkle working by itself and puchased "Supreme Commander", I decided that I wanted a little more performance and got the EVGA for SLI awesome graphics. When supreme commander was first installed I was having sound driver issues with the game the latest nforce4 DRIVER UPDATE fixed that. I then installed the EVGA by first swithing the mobo thingy over to Dual mode, connecting the extra power supply on the mobo then inserted EVGA into slot and attached mobo supplied SLI Bridge. With the sparkle drivers installed it would recognize that I had 2 vid cards and could go SLI, but it would NOT let me enable SLI. WIth the NEWER Evga drivers the computer(nview control panel) would not recognize that I had 2 cards and could go SLI. What do I do now? BTW the Nvidia site is not helpfull.