Debra Winkler, a former Granite School District teacher, has been appointed education director of the Sylvan Learning Center. She has degrees from Georgia State University and the University of Utah. Mark Driscoll has joined the Utah Museum of Natural History at the U. as assistant director of exhibits. He formerly was exhibits director for the Academy of Natural Sciences in Pennsylvania. Tom Sawyer, chairman of the board emeritus of NACT Telecommunications, has been appointed to the board of directors of World Wireless Communications Inc., and Workforce Solutions Inc. has appointed Denise Anderson as an account executive. She formerly worked for the Economic Development Corporation of Utah. Adam Whitefield has been named the Salt Lake Valley West area manager in the banking center administration of Zions First National Bank. He has eight years of banking experience. Lorena D. Schnebly has been promoted to corporate training officer at First Security Corp. She joined the company in 1993 as a teller.