i figure you're running Snow, it doesn't have AppleIntel8255x.kext. Make sure you don't have any other AppleIntel8255x.kext in S/L/E and use the ones on my guide.. the links are at the top of the page. If you do are on Snow and running 64 bit, you need the Snow version, fixed by @hnak.
Follow the guide patiently, cover all possibilities that can screw with you, they are several... it was made thinking on Leo but the procedure is the same.
It doesn't get easier than this, you know.. it's just edit a plist or two and install a kext.
The device id is the same as mine so, it must work... can't say that you did anything wrong, from the info
p.s.: forgot the install doubt.. use terminal to install:
sudo cp /blabla.kext /S/L/E sudo chown -R 0:0 /S/L/E/blabla.kext sudo chmod -R 755 /S/L/E/blabla.kext sudo touch /S/L/E