BURLINGTON, Vt. - Democrat Howard Dean (news - web sites) shook up his faltering bid for the White House on Wednesday, replacing his campaign manager with a longtime associate of former Vice President Al Gore (news - web sites). In a further sign of distress, the one-time front-runner implemented cost-cutting measures as he looked ahead to a series of costly primaries and caucuses, asking staff to defer their paychecks for two weeks. "Governor Dean asked Roy Neel to join the campaign as CEO and Joe Trippi resigned as campaign manager," said Tricia Enright, a campaign spokeswoman. One source said the...