This episode's headline: Having Their Say; 9/11 Impact One Year Later; Conversation Then and Now. ANCHOR: JIM LEHRER; GUESTS: REP. DENNIS KUCINICH; SEN. KAY BAILEY HUTCHISON; SEN. RICHARD DURBIN; SEN. SAM BROWNBACK; HOWELL RAINES;NANCY MAYNARD;AARON BROWN; ANDREW HEYWARD;RICHARD BROOKHISER;CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN