Mine

# cat /etc/X11/xorg.conf

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

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
EndSection

Section "Device"
        Identifier      "Configured Video Device"
        Driver          "fglrx"
EndSection

Section "Monitor"
        Identifier      "Configured Monitor"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "Configured Video Device"
        Monitor         "Configured Monitor"
        DefaultDepth    24
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
        Option          "AIGLX" "on"
EndSection

Section "DRI"
        Mode            0666
EndSection

>>>>>>>>>>>>>>>

# aptitude install fglrx-driver fglrx-kernel-src
# cd /usr/src/modules/fglrx/
# sh make.sh
# cp fglrx.ko /lib/modules/2.6.22-3-k7/misc/
# depmod -ae

>>> reboot X

# lsmod | grep fglrx
fglrx                1480780  18
agpgart                32264  2 fglrx,ati_agp