摘要: In this paper we introduce our new software tools – collaborative PowerPoint applications using Instant Message and Meta data as a Web Service which are suitable in the usage of virtual education. The message-based make it efficient long distance learning We use error-tolerant NaradaBrokering messaging service message environment to communicate messages during process, makes more reliable. By Metadata Service, further improve communications modularity. from presentations can be generated dynamically sessions, saved reflected schedules or lectures’ list on session server; possible for rendering asynchronously well synchronously, thus used On-demand education, too.