I'm using an XFX nForce 750a with Phenom Quad and I had to install it on my wife's machine, add my IDE DEV's numbers, cos all's I would get was still waiting for root device. . .

Once I did that, it was a breeze.

Using iPC 10.5.6 and installed the following drivers:
Video: (using GeForce 7300GS) and NVinject for dual monitors
Sound: Realtek ALC1200 (AppleAzaliaAudio) here (if insanelymac isn't down)
LAN: Onboard Yukon Marvell 88E8056 driver

for IDE to work I had to manually add 0x075910de to AppleVIAATA.kext (Because nforce driver says it didn't like it) after fixing permissions. For the SATA drives you just have to change the setting in CMOS from SATA to AHCI.

I still need the sound driver if you got one, I'd really appricate it!
InsanelyMac has been down now for a while, that's where I got it before. . .