Redmond, Wash.--Microsoft Corp. Thursday announced a b-to-b marketing tour aimed at black and Hispanic small-business owners. The company will run 85 workshops through October in 14 cities. Microsoft Chairman Bill Gates announced the tour, which will include participation by a pair of Microsoft executives, and marketing support from the National Black Chamber of Commerce and U.S. Hispanic Chamber of Commerce. Compaq Computer Corp. is among the technology partners participating in the series. The move follows the last month's launch of a $250 million b-to-b corporate identity campaign by Microsoft.