This episode's headline: News Maker; Gergen & Shields; Conversation; Minds of Their Own. The guests include PRESIDENT CARLOS ANDRES PEREZ, Venezuela; DAVID GERGEN, U.S. News & World Report; MARK SHIELDS, Washington Post; CORRESPONDENTS: DAN GIFFORD; JOANNA SIMON; ESSAYIST: ROGER ROSENBLATT. Byline: In New York: ROBERT MacNeil; In Washington: JUDY WOODRUFF