Thomas M. Siebel is the chairman and CEO of Siebel Systems, one of the world's leading application software companies. A noted industry spokesman, Mr. Siebel is also the coauthor of Virtual Selling, published by the Free Press in 1995. Mr. Siebel attended the University of Illinois at Urbana-Champaign, where he received a B.A., M.B.A., and M.S. in computer science. Pat House is the executive vice president and cofounder of Siebel Systems.