Kevin Warren has been appointed president, CEO and chairman of Xerox Canada Inc beginning January 1/08. The 23-year-old Xerox veteran will oversee all aspects of the company's Canadian operations and report to James Firestone, president of Xerox North America. Previously VP for US eastern sales operations, Warren led the $1.5 billion acquisition of Global Imaging Systems earlier this year. He holds a BSc in finance from Georgetown Univ and graduated from Harvard Business School's advanced management program….