Fedora 7开启compiz后窗体无边框的设置

开启compiz后窗体无边框，该怎么设置？

我的xorg.conf文件细心为

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder3) Mon Apr 16 20:37:13 PDT 2007

# Xorg configuration created by pyxf86config

Section “ServerLayout”
Identifier “Default Layout”
Screen 0 “Screen0” 0 0
InputDevice “Mouse0” “CorePointer”
InputDevice “Keyboard0” “CoreKeyboard”
EndSection

Section “Files”
EndSection

Section “Module”
Load “glx”
Load “i2c”
Load “bitmap”
Load “ddc”
Load “extmod”
Load “freetype”
Load “int10”
Load “type1”
Load “vbe”
EndSection

Section “InputDevice”
# generated from default
Identifier “Mouse0”
Driver “mouse”
Option “Protocol” “auto”
Option “Device” “/dev/input/mice”
Option “Emulate3Buttons” “no”
Option “ZAxisMapping” “4 5”
EndSectionSection “InputDevice”
Identifier “Keyboard0”
Driver “kbd”
Option “XkbModel” “pc105”
Option “XkbLayout” “us”
EndSection

Section “Monitor”
Identifier “Monitor0”
VendorName “Unknown”
ModelName “Unknown”
HorizSync 30.0 – 110.0
VertRefresh 50.0 – 150.0
Option “DPMS”
EndSection

Section “Device”
Identifier “Videocard0”
Driver “nvidia”
EndSection

Section “Screen”
Identifier “Screen0”
Device “Videocard0”
Monitor “Monitor0”
DefaultDepth 24
SubSection “Display”
Viewport 0 0
Depth 24
EndSubSection
EndSection

安装的显卡驱动是NVIDIA-Linux-x86-1.0-9639。