Fudgiepoos

I used the default Xorg 7.1 that ships with Edgy, and Compiz & friends from Quinnstorms Edgy repositories.

Section "Module"
   Load  "bitmap"
   Load  "ddc"
   Load  "dri"
   Load  "extmod"
   Load  "freetype"
   Load  "glx"
   Load  "int10"
   Load  "type1"
   Load  "vbe"
EndSection

Section "Device"
   Identifier  "ATI Technologies, Inc. RV370 5B60 [Radeon X300 (PCIE)]"
   Driver      "ati"
   BusID    "PCI:1:0:0"

  Option "XAANoOffscreenPixmaps"
  Option "backingstore" "true"
  Option "ColorTiling" "on"
  Option "EnablePageFlip" "true"
  Option "SubPixelOrder" "none"
  Option "RenderAccel" "true"
  Option "AGPMode" "4"
  Option "DynamicClocks" "on"
  Option "mtrr" "on"
  Option "VideoOverlay" "on"
  Option "OpenGLOverlay" "off"
  Option "RendelAccel"   "true"
  Option "MergedFB"   "true"
  Option "OverlayOnCRTC2" "true"
  Option "CRT2Position" "RightOf"
  Option "MetaModes" "1280x1024-1280x1024"
EndSection

Section "Screen"
   Identifier  "Default Screen"
   Device      "ATI Technologies, Inc. RV370 5B60 [Radeon X300 (PCIE)]"
   Monitor     "DELL E171FP"
   DefaultDepth   24
   SubSection "Display"
      Depth    24
      Modes    "1280x1024"
      Virtual  2560 1024
    EndSubSection
EndSection

Section "ServerFlags"
#  Option "Xinerama" "ON"
EndSection