Heya.... to give you a quick breakdown...
I used the "How to get it running on an AMD pc" guide and the "Install Snow Leopard how to from the sticky...
That mostly helped with the dsdt.aml and UUID settings... trust me it is important.
I used the following files that are all around on the forum:
Kernel for amd Snow 10a432
AppleIntelPIIXATA.kext
IOATAFamily (When I added this in the end... everything worked for me

)
NullCPUPowerManagement.kext
OpenHalRestart.kext
PlatformUUID.kext
boot efi 10.1
The rest of the files are from the guides as mentioned. LIke I said... the UUID and dsdt.aml... with the kexts was very important.
I have all my kexts in the extras folder... except the two ATA ones... i copied them to the S/L/E folder and repaired permissions with chmod and chown..
And it works...
GMA 950 isn't workin 100% yet, and I get kern panic on full screen RSS screen saver or any video I want to run... but I think the solution is in adding the efi strings.
It loads the driver... but at the moment.. when I have time... I will look in to it further.
Good luck... it's worth it.... had 10.5.7 running and 10.6 is a LOTT faster for me
ps...was so busy following between these guides... will try and see if I left anything out...
plus I am booting with just -v