A remote site managing system manages, in a unified fashion, computers and peripheral devices installed at a customer site. The remote site managing system automatically receives information indicating a failure which has occurred or indicating a high possibility that a failure will occur in some of PC/servers or peripheral devices installed in a customer's office and provides maintenance services without causing a customer to be concerned about anything. Furthermore, transmission of a request to a maintenance service company and reception of a service operation report from the service company are performed by the remote site managing system in an unified fashion.