HOW TO INSTALL:
1. Remove existing Apple PS2 Controller, VoodooPS2Controller, AppleACPIPS2Nub, ApplePS2 Keyboard and old Elan Touchpad Kexts (if you have already installed) From System/Library/Extensions and Extra/Extensions folders
If you have installed Mac OSX using myhack method then try to remove the above kexts
from the plugins folder inside myhack kext "myHack.kext/Contents/Plugins/" in S/L/E
2. Install only the attached ApplePS2Controller and Touchpad Kexts inside the zip file, since there is some dependency between the PS2Controller and Touchpad kext for some features to work.