IT'S NOT OVERWhen news broke a few weeks back that Bill Clinton might launch a talk show of his own, his associates made a big deal of saying their boss is interested in becoming the 'next' Oprah Winfrey.Now word comes from Chicago that Winfrey herself may be interested in helping the president out.According to a freelance production assistant at Winfrey's Harpo Productions in Chicago, where Winfrey's show is shot, some staffers are curious to see just how good Clinton could be in their environment.There is an ongoing discussion to bring Clinton in for several shows on issues of national importance...