IOPCIFamily trouble

[CoinCollector]

I'm new to OSx86 and recently got Leopard 10.5.7 installed from a retail DVD onto my PC. The only things that aren't working now are my NVIDIA card and my sound. After looking in verbose mode, I saw some kexts aren't loading because of this error:

loaded version 2.4.1 of module com.apple.iokit.IOPCIFamily differs from requested version 2.5

I've looked inside IOPCIFamily.kext and both Info.plist and version.plist say that it's version 2.5. I also tried extracting and installing the IOPCIFamily.kext 2.5 from the 10.5.6 Combo Update and that didn't do anything. Loading 2.6 doesn't change anything either. No matter what, it seems to be loading 2.4.1. Anyone know what's going on?