[xmonad] Mod Key on Mac OS X..

I got xmonad running on my mac (mostly followed http://www.haskell.org/haskellwiki/Xmonad/Using_xmonad_on_Apple_OSX). However, I don't have any mod key active. Neither the apple command nor the alt works. I have let the default config for mod mask: defaultModMask = mod1Mask And have set numlockMask = 0 I am running 10.5.6 and X11:XQuartz 2.3.2 (xorg-server 1.4.2-apple31) Could someone help to get this working? Thanks.