Computer geniuses who've made it big are the ultimate heroes for kids. These young millionaires in the high-tech and business worlds are big news today, but like all inventors before them, their work is based on the work of their predecessors.Jeff Bezos knew how to set up an efficient Internet ordering system, he just needed a product to sell. From a small garage-based business to the multi-million dollar Goliath known as Amazon.com, Bezos is the...