TXU ( TXU) said finance chief Kirk Oliver and general counsel Eric Peterson will leave to pursue other opportunities. The company also named Mike Childers generation development chief and said it wants to appoint a new chief of generation construction. "Kirk and Eric played important roles in restructuring TXU's business and financial portfolio and eliminating billions of dollars of litigation risks. I thank both of them for their efforts," said CEO C. John Wilder. David Poole will replace Peterson as general counsel. The company is searching for a new chief financial officer. David Campbell will fill those duties in the interim.