This episode's headline: Zimbabwe - Power Surge; Probing Questions; RX for Change; Alternative Schools; Theological Curry. ANCHOR: JIM LEHRER; GUESTS: SIMBI VEKE MUBAKO, Ambassador, Zimbabwe; KENNETH WOLLACK, National Democratic Institute;: REP. BILL THOMAS, (R) California REP. PETE STARK, (D) California; CORRESPONDENTS: TIM ROBBINS; TERENCE SMITH; BETTY ANN BOWSER; SUSAN DENTZER; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; LEE HOCHBERG; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN