Hello, i have a MacBook Air, and after installing the NVidia proprieetary driver, i can't control the brightness of the screen

.With nouveau/vesa, it worked. I just installed Fedora 15, and it's AWESOME
Several notes:
1. I use GRUB-EFI (Compiled by myself

), since it works better with Macs
2. I boot with nomodeset, otherwise the X server isn't starting (with nouveau it starts)
3. I could've used nouveau, but GNOME 3 isn't starting.
Thanks