This episode's headline: The Search for bin Laden; Oregon Objects; French Connection; Conversation. ANCHOR: JIM LEHRER; GUESTS: COLIN POWELL; JIM STROUD; DAVID BENNAHUM; HAYNES JOHNSON; CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN