Hi Guys , I just figgured it out !!!
Try this :
After or before you've installed NVkernel + GLX from the RPMS
Go to your BIOS and enable " Assign IRQ for VGA "
After that edit your XF86Config-4 as usual.
Do a reboot , login as a normal user ... thats it .
Have fun !
Don't know if this will work fine for you too but try it , you have nothing to loose .