I got an question.
I have successfully installed Snow Leopard using your way,
but I changed my GeForce 9600GT for an ATI HD 4870 512MB GDDR5 simply because its better, and I know it works on 10.6.1.

However, when I did that, I got the following error:
"AppleRTL8169 phywaitforautonegotiation timeout"

I have googled, and I have no idea how to fix it.
I did also try to use the USB-Installer and boot to install another one, because I thought it was because of the GFX change,
but that doesnt work either..
I have also tried to do "n" instead of "y" on the useethernet string, but nothing.
I have tried to remove the GFX String, nothing.
I have tried to remove all the NVIDIA kexts (NVxxxx.kext), still nothing.
Same result.

Any chance for a hint in the right direction, or an direct answer?

- Dag Magnus

Edit: I removed the NVIDIA kext from the installer, the ATI kext, and added an modified ATI Kext and my installer now works.
But when I install and try to run the newly installed Snow Leopard, it stops at the same problem.
I dont know what I am supposed to do now, I am completely lost!