Yesterday I wrote about the number of CEOs and CIOs of companies based in the United States who hail from foreign shores. I've got another name to add to the list: DuPont appointed Phuong Tram (left) to succeed Robert Ridout as CIO, the company announced today. Ridout, 61, is retiring on December 31 after 39 years with the company. Tram, 53, currently serves as vice president of DuPont Information Technology Integrated Service Delivery--a position he has held since December 2006. Tram has worked for DuPont since 1990, when he joined the company as an operations manager in Sydney, Australia. From 1994 to 1999, he held different business and functional management positions in Australia and Singappore. Tram came to the United States in 1999 when he was named IT and e-business director for DuPont's agriculture and nutrition businesses. Five years later he was put in charge of IT for Dupont global operations and functions as well as Asia Pacific and Canada. Tram graduated from the University of New South Whales in Australia with a B.E. in chemical engineering.