DELL INC. named Donald J. Carty vice chairman and CFO of the $55.9 billion computer maker, which is based in Round Rock, Texas. Carty, 60, has been a board member since 1992, serving as the audit committee chairman. From 1998 to 2003, Carty was chairman and CEO of AMR Corp. He also served as president of AMR Airline Group and American Airlines Inc. Prior to that, he was CFO at AMR. Carty succeeds James M. Schneider, who left to become executive chairman of Frontier Bancshares Inc.

WAL-MART STORES INC. promoted Charles Holley to treasurer and executive vice president of finance of the $315.7 billion, Bentonville, Ark.-based retailer. Holley, 49, who had been senior vice president of finance, succeeds Jay Fitzsimmons, who is retiring. He joined Wal-Mart from Tandy Corp. in 1994, serving as senior vice president and CFO of the international division. In 2003, he was named senior vice president and controller of Wal-Mart and in 2005 became senior vice president of finance.

ACE GROUP OF COMPANIES named Audrey Samers global ethics and compliance officer of the $13.1 billion, Bermuda-based insurer. Samers, 42, joined ACE in May 2006 from the New York State Insurance Department, where she served as deputy superintendent and general counsel. She joined that organization in 1998 as special counsel to the superintendent on Holocaust-related issues. She succeeds Kevin Rampe, who was named general counsel of ACE's North American operations.