I have an iBook G3 without an Airport card. I would like Wi-Fi, but AirPort Original Cards are so rare and expensive. Are there any Mac compatible alternatives? Like if you go to Wal Mart, there are internal Wi-Fi cards you can buy for a laptop. Like this: http://www.bestbuy.com/site/olspage.jsp?skuId=8544934&type=product&id=1188560188081 But works with my G3 iBook.