1. A client environment creation system for creating a client environment, to which a user connects, comprising: a user information management server, which stores user information on the user; and a management server, which creates a client environment associated with said user based on said user information; wherein said user information management server includes: a user organization table, in which said user information is stored; a user information processing section, which provides data in said user organization table to said management server, and when said user information is changed, updates said user organization table; a client environment configuration table, in which information on an association between said user information and information related to a client environment is stored; and a client management processing section, which refers to said user organization table, acquiring information related to said client environment from said client environment configuration table based on said user information, and creating said client environment in said client environment server.