This episode's headline: Interim Appointment; High Art; Call for Dialogue. ANCHOR: JIM LEHRER; GUESTS: SEN. LARRY CRAIG, (R) Idaho; SEN. DIANNE FEINSTEIN, (D) California; RICHARD MURPHY, Former State Department Official; SAID ARJOMAND, State University of New York; KENNETH TIMMERMAN, Iran Analyst; CORRESPONDENTS: JEFFREY KAYE; PHIL PONCE