i had a 8400gs too, got it to work with adding the 060610de id in the following three kexts (info.plist)

GeForce.kext
NVDANV50Hal.kext
NVDAResman.kext

if this isn't working for you guys then remove all nvidia related kexts via terminal:

Gef*
NV*

and try the zephyroth universal Nvidia installer!

clear the caches and reboot

after the Nvidia Universal installation and putting the right ids (060610de) in the info.plists again u should have full QE/CI

for dual monitor support u have to edit the nvcaps of you nvinject!

i have the right values @ home i will post them later!


i hope i can help you guys a little bit out

grtx ^fire^

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HomeHackintosh:
AMD Athlon64 X2 4400 :: ASRock ALiveNF5-eSATA2+ R3.0 :: Corsair 2GB DDR2-800 :: Gainward Geforce 8800GS PCI-E :: Maxtor 250GB SATA HD :: Audiotrak Maya 44 USB :: Phillips 22" 220AV TFT ::
Custom 10.5.5 Voodoo_Beta2 Kernel

Minimacbook:
Acer Aspire One A150X Netbook :: Intel Atom 1,6Ghz :: 1GB DDR2 :: Seagate 120GB SATA HD :: Acer 8,9" Crystal Bright TFT ::MSI Wind OSX 10.5.4 upgraded to 10.5.5 & Voodoo_Beta2 Kernel