THE ECB'S NEW BOSS - As head of the European Central Bank, Jean-Claude Trichet replaces Wim Duisenberg, a Dutchman known for his hawkish monetary policy and, early in his term, glaring gaffes. The latter shouldn't be a problem for his successor, who is famous for his savoir faire. But will Trichet also make more substantive changes at the ECB that will support the euro and get growth going?