nvidia graphics driver build 5308

Hi all,
I downloaded the forceware driver release 85 (version 87.15), but i cant install them Acording to the instructions i have to go to "Windows device manager and manually update the driver" but i have no driver to update, there is no graphic driver like xp used to have. I cant find any reference to graphic drivers at all. I have 3 "Unknown devises", have tried to update all of them, but the drivers do not match.
I have also tried to add hardware manually and point to the drivers on the "have disk" option, but the list comes up empty there.
Anyone have any ideas on how i can install the drivers?
Regards Rolf

A little update.
I found out that 2 of my 3 "unknown devices are infact my 2 videocards (i have 2x6800 ultra in SLI mode)
I can start installation if i pick one of these 2, and select update driver. Then i select "Browse my computer for driver software" and then i pick "Let me pick from a list of device drivers on my computer" then i can browse to my install files. If i try to browse directly it doesnt list anything.
But the problem is when i start installing the driver i get a BSOD with a message Stop: 0x0000007E (0x0000005 0x00000000 0x897E381C 0x897E3518)
I suspect the SLi mode is causing the problems for me, so i tried to remove one of the cards and tried again (changed the "SLI jumper card" as well") but with no success.
So have anyone gotten a SLi rig up and running with these drivers, and if so pleas help me.
Regards Rolf