Yes I followed these instructions and the system is operating at 90%.
I have Snow Leopard with Wifi, Ethernet, trackpad, keyboard, etc.. There is just the sound card that is not recognized.
The EDP installer working correctly but when I run the application it crashes and EDP makes me the error message in Terminal.
It's the "4) after reboot, download and install EDP software, then run it to do your system build" who doesn't work for me.