Ok I installed a kext from kexts.com and wifi is working now. Just waiting for tomorrow to connect to my University's network. Hope it'll work cause the network is WPA2 Enterprise. Now I've 10.6.8 with audio, wifi, DSDT repaired and compiled in /Extra. But close the lid cause the system to hang. And sometime the system panic at boot. Turn it off and turn on again fixed. Another problem is although system recognized and installed software from my 3G USB stick, it just keep saying no signal from mobile network while I can connect with Windows 7.

Thinking about Lion and will try to figure how to install it on my K40IN.