Sin efectos Especiales 8.4

Hola amigo Shakka!,tu ayuda es muy valiosa !,dejame contarte como viene el asunto.Instalé Ubuntu 8.4 y no me daba resolución mayor a 1024,le instale envy y fue peor x ke la única resolución ke me daba era la d 800,luego le sobre escribi el xorg.conf con uno de la version 7.10 ,y la resolucion ya podia ser mayor a 1024,pero ahora aunque tenga buena resolcuion no activa los efectos especiales tengo la siguente configuracion d ekipo y nunca medio problemas x mas efectos ke le habilitara .Pentium d 3.4,ram 2g,video Gforce7300LE .
Contenido..

# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "es"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
EndSection

Section "InputDevice"
Driver "wacom"
Identifier "stylus"
Option "Device" "/dev/input/wacom"
Option "Type" "stylus"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
Driver "wacom"
Identifier "eraser"
Option "Device" "/dev/input/wacom"
Option "Type" "eraser"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
Driver "wacom"
Identifier "cursor"
Option "Device" "/dev/input/wacom"
Option "Type" "cursor"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "Device"
Identifier "nVidia Corporation G72 [GeForce 7300 LE]"
Driver "nv"
BusID "PCI:1:0:0"
EndSection

Section "Monitor"
Identifier "7F-SLK"
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation G72 [GeForce 7300 LE]"
Monitor "7F-SLK"
DefaultDepth 24
SubSection "Display"
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"

# Uncomment if you have a wacom tablet
# InputDevice "stylus" "SendCoreEvents"
# InputDevice "cursor" "SendCoreEvents"
# InputDevice "eraser" "SendCoreEvents"
EndSection