No. 2: Sean Belnick

Age: 20

Location: Canton, Ga.

2006 revenue: $24 million

Employees: 75

Year founded: 2001

At 14, Belnick started a direct-shipping company for office furniture from his bedroom -- with $500. The company now stocks many of the products it sells in a new 327,000-square-foot warehouse and has branched out into home furniture, medical equipment and school furniture. Notable clients include the Pentagon, MSN Money publisher Microsoft (MSFT, news, msgs) and "American Idol."

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Source: Inc.com

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