Other Help Topics :: away with mouse and keyboard

I want to do away with mouse and keyboard. I'm building a sort of narrowcasting-box, with firefox fullscreen showing some advertising. (yech..)
Anyways, I don't want nor need a mouse. W/o keyboard the thing won't boot, so I'd like some advice on how to get rid of the little arrow in the middle of the screen. This is a HDinstall, dsl automatically logs into X with this .xserverrc:
xec /usr/bin/X11/Xvesa -screen 800x600x32 -shadow -nolisten tcp -I &>/dev/null
(i completely took out the mouse-comment). Still, there's a mouse visible, albeit that it doesn't do anything.
Does anybody know how to get rid of it?

original here.