This basically works for me as well.
Sound is definitely NOT working with the ApplyHDA kexts installed with NBI.
Sleep is also not working (appears to go to sleep but then immediately wakes up 1-2 seconds later).
Trackpad support is also lacking--can't click with the pad itself, and no gestures are supported.
Wireless works, but wired doesn't (no big deal for me).
I've been trying to get sound working with with no luck. I installed VoodooHDA with the installer, and this gives some sound support, but accompanied by high-pitched distortion and feedback.
Also, I've found that using NBI's "UpdateExtra" utility totally hoses the entire system, resulting in a kernel panic on boot. Deleting /Extra and all kext caches and running NBI again does not fix the problem, and I've had to do a clean install to get it working again.
Not really sure where to go from here -- I'm going to try removing the AppleHDA kexts and adding VoodooHDA 0.2.1 beta using command line utilities on a fresh install.