xorg.conf文件要怎么改？

安装了Fedora-8的朋友把你的xorg.conf贴上来啊，我的图形界面进不了
以下是我的xorg.conf文件

# Xorg configuration created by pyxf86config
Section "ServerLayout"
Identifier     "Default Layout"
Screen      0  "Screen0" 0 0
InputDevice    "Keyboard0" "CoreKeyboard"
EndSection
Section "InputDevice"
Identifier  "Keyboard0"
Driver      "kbd"
Option     "XkbModel" "pc105"
Option     "XkbLayout" "us+inet"
EndSection
Section "Device"
Identifier  "Videocard0"
Driver      "radeon"
EndSection
Section "Screen"
Identifier "Screen0"
Device     "Videocard0"
DefaultDepth     24
SubSection "Display"
  Viewport   0 0
  Depth     24
EndSubSection
EndSection