Vitech whets Brazil's 'insatiable' thirst for PCs. (Vitech America Inc exports personal computers)

Brazil may be known more for sambas than computer sales, but that hasn't kept Vitech America from riding the technology wave sweeping Latin America's largest market - to the tune of $73.3 million in sales.

Vitech is a Miami-based personal computer manufacturer that distributes exclusively in Brazil. The company has confounded skeptics by raking in increasingly impressive profits. In its three-year existence, Vitech's sales have grown from $17 million in 1994 to $49 million in 1995 and $73 million in 1996. Net income for 1996 increased 19 percent.

Sales are expected to reach $105 million this year, but that's a conservative estimate, said Steve Loewengart, technology analyst at H.J. Meyers …