This episode's headline: Paying for the Past; News About News; Right to Reply. The guests include In Washington: PATRICK BUCHANAN, Former White House Comm. Dir.; CHARLES FERRIS, Former FCC Chairman; MARK FOWLER, Former FCC Chairman; In Boston: ANTHONY LEWIS, New York Times; REPORTS FROM NEWSHOUR CORRESPONDENTS: JEFFREY KAY, KCET, Los Angeles. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor