X keyboard config using command key

[christophe =?unknown-8bit?q?barb=E9?= <christophe@cattlegrid.net>]

Hi,

What is he best config for a MAC (laptop) keyboard ?
I am especially looking for a config using the command key and giving me
access to the special char like the mu symbol (under mac : command+m)
and the accents (ù : command ` + u).

In my XF86Config file, I have:

 Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "keyboard"
        Option      "CoreKeyboard"
        Option      "XkbRules" "xfree86"
        Option      "XkbModel" "macintosh"
        Option      "XkbLayout" "us"
EndSection


Christophe