By ROBERT CROWE Copyright 2003 Houston Chronicle From exotic drag queens strutting their stuff to colorful floats sporting gay and lesbian activists, the Houston Pride Parade on Saturday night attracted a large, festive crowd. While just as flamboyant as it has been during its previous 24 years, the atmosphere was charged by the U.S. Supreme Court's recent ruling that overturned Texas' sodomy law. "This is overwhelming and still seems a little unreal after all these years -- more than three decades of struggle -- that we're finally free in Texas and free all over the country," said Lee Harrington. A...