Asia Simulation Conference is an annual simulation conference organized by three Asian simulation societies - KSS (Korea Society for Simulation), CASS (Chinese Association for System Simulation), and JSST (Japan Society for Simulation Technology) and provides a forum for scientist, academicians, and professionals from around the world. This year conference will take place in Seoul, Korea. Seoul is the capital of Korea with over 600 years of history. It is the heart of Korea’s culture and education as well as politics and economics. Seoul is unique in that historical sites and modern cultural facilities coexist in harmony. We encourage you to actively participate the ASC 2007 by submitting papers and proposals for organized sessions.