well i dont think you will have a mac version, as mac lock the openGL spec down and only support shader lvl 1.2
so can not see you getting LE in to that
and before anyone say but they have nvidia cards in there the os lock so it work the same on inte,l nvidia and ati the same
this is the only reason the mac wins over windows so the way i see is dum down LE to mac
but i could be wrong here lol