In Business This Week
-- Microsoft will invest $90 million in Wang Laboratories, settling a suit.
-- New owners at New York's Plaza Hotel: Saudi Prince Alwaleed and Singapore's CDL.
-- United Airlines will retire 94 planes earlier than expected and may buy 50 new ones.
-- Thomas Block, CEO and son of co-founder Henry, will leave tax preparer H&R Block.EDITED BY KEITH H. HAMMONDS