PALMDALE - In a giant hangar at Air Force Plant 42 where strategic nuclear bombers were built to win the Cold War, computer giant Microsoft has staked its future in the gaming industry, an $8 billion global market. An Internet underground marketing campaign brought 3,000 dedicated players from around the world to the Antelope Valley for Microsoft's North American launch of its newest game system. "It's basically a 30-hour party. There's never been anything like this," said Ricardo Torres, a senior editor at GameSpot.com, an online entertainment forum. In the virtual reality world of computer gaming, the giant from Seattle...