Jul. 27—Hall of Famers, Heisman Trophy winners and even "The Great One," Wayne Gretzky, will converge this weekend at the Coeur d'Alene Resort Golf Course to raise money to fight cancer — and some of them were there Thursday, eager to talk about switching sports for a good cause. The Community Cancer Fund's eighth annual the Showcase celebrity golf tournament will run from 8 a.m. to 1 p.m. …