With the growth of the World Wide Web (WWW), the needs of representing 3D world on Internet have increased rapidly. To this VRML97 has played an important role in the growth. The present time, there are a many VRML browser based on OpenGL and Direct3D rendering libraries, and Sun Microsystems has already prototyped a 3D browser. W >e describe a certain event model is used to implement our Java3D-based VRML browser as network client in our Networked VR project.