In connection with today's announcement, Larry F. Altenbaumer, president of Illinois Power, announced his retirement, effective April 1, 2004, after more than 30 years with the company. He will serve in a consulting role and assist with the approval process over the next several months. Blake Young, who currently serves as executive vice president and chief administrative officer of Dynegy, will assume overall responsibility of Illinois Power and the transition to Ameren during the regulatory approval process.