Paris-based Solving International, founded in 1980 by Roland Fitoussi along with 10 other consultants, may not be a household name in the States, but the firm is growing into a global strategy force to be reckoned with. Its name is a handy memory aid -- specializing in solving the strategic and organizational challenges of its international clients, Solving employs 520 consultants and draws on a global network of 1,000 experts.