The Associated Press reports that ConAgra Foods Inc., is looking for a new chief executive and chairman after Bruce Rohde announced that he is stepping down after eight years. A search committee will be led by ConAgra board member Steven Goldstone, retired chairman and chief executive of RJR Nabisco, board members said. When Rohde took over, about half of ConAgra''s sales involved commodities such as fresh beef, pork, chicken and canned seafood. Rohde sold those business and last year, more than 80 percent of ConAgra''s sales came from branded foods and value-added foods. Now one of the nation''s largest food companies, its brands include Act II popcorn, Healthy Choice, Banquet, Chef Boyardee and Manwich.