Nathan Buzza started tinkering with computers while recuperating from a childhood illness, eventually teaching himself computer programming. By the time he returned to school he had written a computer game and started a company to promote it. It was purchased by a major electronics company and distributed worldwide. At 18 he was R&D manager and executive director of Austco Communications. Now, at 32, he is CEO of Commtech Wireless, which made the grade for both the Deloitte Fast50 and the BRW fast 100, and has offices in Melbourne, Sydney, and Florida.