The present invention relates to a system having an information image management server, an advertising agency terminal and a client computer connected with one another via a network, in which the information image management server extracted a client computer which meets a client specifying condition on the basis of client specifying condition information from the advertising agency terminal, then a message to carry out update or addition of an information image recorded in a management area of the extracted client computer is transmitted to the extracted client, and the client computer which has received the message carries out update or addition of an information image in accordance with the message.