Which Keyboard under XFree86 4.20

Hi again! I just compiled XFree86 version 4.2 on my ibook running suse linux 7.1 and everything works fine except for the keyboard mapping which gets pretty screwed up when using "macintosh" as keyboard type. In fact there isn´t a key that matches. Right now i am using "Microsoft" as keyboard type (yeah i hate it too) and it works ok, it is just that i can´t get the "alt" key to work, does anyone have any idea which keyboard type to use or have any other solutions? Thanks Peter