Pci Bridge Device Driver SM Bus Controller, Other PC Bridge Device And PCI Simple Communication Controller Drivers , Help Please?

SM Bus controller, other PC Bridge device and PCI simple communication controller drivers , help please? - pci bridge device driver

Hi, I recently udpadte my graphics card (Nvidia 6600) My SM bus controller, a communication with a PC and PCI bridge controller driver for easy, no drivers were installed after the upgrade.
My computer system:
AMD Athlon 4200 + 2.21 Ghz Dual Core 2x
Windows XP
-1GB Ram
NIVIDIA-6600
-Motherboeard - ASUSTeK A8N-SLI Premium
...
In any case, know where I can download a driver and if I do not, thank you for it.