KING WORLD PRODUCTIONS INC <KWP> 2ND QTR FEB 28 Shr 21 cts vs eight cts Net 6,597,000 vs 2,602,000 Revs 56.4 mln vs 23.2 mln 1st half Shr 57 cts vs 32 cts Net 17.6 mln vs 9,810,000 Revs 137.7 mln vs 76.0 mln