SmBus controller driver trouble

I am looking for an SmBus controller driver:
Intel 82801GB ICH7 - SMBus Controller [A-1]
Where do I find the drivers for this pci device

Ash 4

Did you install the Chipset Software Installation Utility ?

yes i did and my chipset is intel i946 gz

Does the smbus show in device manager?

If not, what motherboard make and model is this?