I finally got it working with my X2300 (CI/QE @ 1440x900). Here is a zip of the kexts I used:X2300Drivers(by Ice).zip (some may not be required but it works for me). Tested with iPC 10.5.6 and 10.5.8 on F5VL ASUS notebook mainboards.
YOU WILL FASTEN YOUR CHANGET KEXT,THOSE WHICH FOR YOU!!!!!!!! PLEASE))))