The first step to make your world multi-user is to connect to a server. First, make sure that a port on the server has been allocated for the world.
(Note: You can test both a server application and your multi-user worlds on the same Windows95 machine by downloading the Windows95 VsServer which supports up to 12 simultaneous connections.)Once you have a port number, insert the following line at the top of your VRML file :
WorldInfo { title "VsServer" info [ "VsServer:hostid:XXXX" ] } where hostid is either the name or IP address of the host machine. XXXX is the port number allocated for your world.