The present invention is directed toward a method, software product, and apparatus for allowing various kinds of information existing on a client terminal to be referred to on a Web browser of another collaborating client terminal. If an image displayed on a display screen of client terminal is specified, the image is compressed to a predetermined formed image data and also given a unique name in the system. This file is automatically sent to a Web server. A Web browser operating on the client terminal is automatically switched to display the file. A Web browser of another client terminal collaborating with this client terminal is also switched to display the file.