Guys, the nForce 570 is a bit of a problem right now. From my experience so far I have never managed to get Lan working on my board. I have an MSI K9N SLI with the nForce 570 MCP chipset that includes dual gigabit lan ports. My only advice is to buy a cheap RTL PCI NIC to save yourselves the time and bother and get surfing quickly.

As for audio, mine has the ALC888 chip which worked out of the box using ACLInject and the ALC888 3 port kext. If you're having issues with the included drivers in the 10.5.2 DVD then I suggest going here and grabbing the attached ALC88x packages which also worked for many others.

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MacBook Pro 15" | Mac OS X 10.6 • 2 GHz Intel Core Duo • 2 GB DDR2-667 • ATI Radeon Mobility X1600 128 MB • 100 GB Serial-ATA
Hackintosh | Mac OS X 10.5.6 • 3 GHz AMD Athlon 64 X2 6000+ • MSI K9N AM2 • 2 GB DDR2-667 • NVIDIA GeForce 8800 GT 512 MB • ALC888 Audio • 300 GB Serial-ATA
iPhone 3G • 8 GB