Tue 05 May 2007North enters new powersharing eraFrom left: Deputy First Minister Martin McGuinness, Taoiseach Bertie Ahern, British Prime Minister Tony Blair, Northern Secretary Peter Hain and First Minister Ian Paisley, in the First Minister's office todayThe Rev Ian Paisley and Martin McGuinness have taken their pledges of office to become first minister and deputy first minister in the Northern Ireland Assembly.