Microsoft has finally roped Yahoo into an Internet search partnership, capping a convoluted pursuit that dragged on for years & finally setting the stage for rivals to make an all-out assault against the dominance of Google. The 10-year deal gives Microsoft access to the Internet's second-largest search engine audience, adding a potentially potent weapon to the software maker's Internet arsenal as it tries to better confront Google, leader in online search & adv. Google tried to stop Yahoo from falling in Microsoft's camp. In