Sunnyvale, Calif.--Yahoo! Inc. will launch its first enterprise-focused ad campaign Aug. 19 to support its new service, My Yahoo! Enterprise Edition 5.0. The Enterprise Edition is an upgrade of My.yahoo.com, the company's consumer-focused portal, and will allow corporate users to access business resources and content. The ad campaign includes print ads in The Wall Street Journal and PC World, and online ads on the Yahoo! network and The Wall Street Journal Online.