Thanks for your guide. I have got everything working on my Asus P5K-Premium but I would like to know if it can get some more vanilla or that this is "it".

On my EFI boot partition I have now these kexts in my extra/extensions folder.

AD1988bFix.kext --> Really needed
AppleYukon2Injector.kext --> Possible to add Marvell Yukon 8056 in dsdt? [ETH0 is pretty dead without it but snow leopard recognizes both ETH0 and ETH1 no led activity though)
fakesmc.kext --> Really needed
OpenHaltRestart.kext --> Without no shutdown/reboot (Black after HALT doesn't do anything) fixable with dsdt?
PlatformUUID.kext --> Possible to edit in DSDT?

My Geforce 8800 Ultra works with an EFI string in my com.apple.boot.plist file but is this possible to add to the dsdt file?

Then another question; There is very slow LAN detection, It takes up to half an hour to see some other hacks/macs and no windows computers. This is normal?