Companies on the Internet fast track are buzzing about the unquestionable potential of B2B e-commerce. And why not? Reliable estimates suggest that trillions of dollars will be transacted over the Web in the next few years—and the bulk of that will occur in the business-to-business space. For all of the discussion, however, this vast frontier of Internet commerce is still unexplored by most companies with the potential to profit. They simply don’t know how to move beyond the hype to get started.