i have animal crossing ww on ds and i dont undertsand how the friend codes work. do i need a wifi adaptor for it to work with people across the world? im form australia, and i DO have a wifi adap. but it wont install on my computer, even after ringing nintendo etc. how would i get a friend code, i know i have to say somehting to copper but im still a bit confused about friend codes on 'wide world'.