Pittsburgh-based DQE Inc. said Wednesday it might put itself up for sale and reported 2000 earnings would come in at the lower end of its 5-8% targeted growth rate. SG Barr Devlin and the Northbridge Group have been retained to explore options that could 'result in the divestiture of some or all of DQE's component businesses, including the sale of the entire company,' David Marshall, chief executive, said during an investor briefing.