Just use this:
I've used [a process from an other forum] for my desktop but couldnt get the laptop options to work. I tried to follow the guide posted in this thread, but the link above is the easiest thing I've found. It works perfectly on my W510. Followed the directions exactly and it worked the first time I think.
What I do and don't have working:
Wifi is via USB dongle without BIOS editing
Sound works with VooDooHDA
Keyboard light works
Battery level works
USB 3.0 works
Webcam and mic work
Trackpoint does not
Touch screen registers as a click but not a mouse
Brightness control is not working (The only thing I really want to get fixed!)
Shutdown doesn't finish all the way (lights turn off but cpu fan still runs until forced off)
I don't even want to try to see if sleep is working right now (does not work for many hackintoshes)
I hope this helps. Feel free to PM me.
IMPORTANT: use the rear yellow powered usb port with the install thumbdrive. it's the only one that will work until the 3.0 ports are enabled.