>I tryed this configuration, and I get black screen again.
>I think I should try "vga" driver or something.

I've attached the XF86Config file that works on my 366MHz iBook SE.
Your machine is the successor to mine, so it has a different video
card, but this may be helpful.  (I originally found this config file
somewhere on the internet, as you can see from the attribution at the
top.)

Regards,

Dave

# base configuration from xf86cfg, tweaked using
# hints from Matsubayashi 'Shaolin' Kohji shaolin@rhythmaning.org
# and K. Hanai-san hanai@koto.kpu-m.ac.jp

Section "ServerLayout"
    Identifier     "ibook"
    Screen         "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath      "/usr/X11R6/lib/X11/rgb"
    ModulePath   "/usr/X11R6/lib/modules"
    FontPath     "/usr/pkg/lib/X11/fonts/TTF/"
    #FontPath     "/usr/pkg/lib/X11/fonts/Mozilla/"
    FontPath     "/usr/X11R6/lib/X11/fonts/TTF/"
    FontPath     "/usr/X11R6/lib/X11/fonts/TrueType/"
    FontPath     "/usr/X11R6/lib/X11/fonts/Type1/"
    FontPath     "/usr/X11R6/lib/X11/fonts/misc/"
    FontPath     "/usr/X11R6/lib/X11/fonts/Speedo/"
    FontPath     "/usr/X11R6/lib/X11/fonts/CID/"
    FontPath     "/usr/X11R6/lib/X11/fonts/75dpi/"
    FontPath     "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
    Load  "dbe"
    Load  "extmod"
    Load  "glx"
    Load  "record"
    Load  "xtrap"
    Load  "speedo"
    Load  "type1"
    Load  "freetype"
EndSection

Section "InputDevice"
    Identifier  "Keyboard0"
    Driver      "kbd"
    Option      "Protocol" "wskbd"
    Option      "Device" "/dev/wskbd0"
    Option      "XkbRules" "xfree86"
    Option      "XkbModel" "pc105"
    Option      "XkbLayout" "us"
    Option      "XkbVariant" "us"
EndSection

Section "InputDevice"
    Identifier  "Mouse0"
    Driver      "mouse"
    Option      "Protocol" "wsmouse"
    Option      "Device" "/dev/wsmouse"
    Option      "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
    Identifier   "Monitor0"
    VendorName   "Apple"
    ModelName    "LCD"
    HorizSync    31-80
    VertRefresh  56-76
EndSection

Section "Device"
    Identifier  "Card0"
        Driver      "ati"
        Option      "device" "/dev/ttyE0"
    VendorName  "ATI"
    BoardName   "Mach 64"
EndSection

Section "Screen"
    Identifier "Screen0"
    Device     "Card0"
    Monitor    "Monitor0"
    DefaultDepth 24

    SubSection "Display"
        Depth    8
        Modes "800x600"
    EndSubSection
    SubSection "Display"
        Depth     16
        Modes "800x600"
    EndSubSection
    SubSection "Display"
        Depth     24
        Modes "800x600"
    EndSubSection
EndSection