I have HP dv2500t laptop which has Synaptics touchpad with Snow Leopard. I did the follwoiing:
1. Deleted the ApplePS2Controller.kext from /S/L/E
2. Deleted the AppleACPIPS2Nub.kext from /S/L/E
3. Using Kext Utility, Installed the VoodooPS2Controller.kext and AppleACPIPS2Nub.kext .
4. kext Utility rebuild the cache.
5. Rebooted.
Now my Keyboard and trackpad, both are not working. Any help please....