How to display the same game board on seperate PC

Rightnow I am working on the multiplayer web based java game project.
The window application is done and working fine.
Now I need to convert it to we application so that users can play from the different terminal.
But I am facing problem to display the same game board with the same pieces on the different terminal I mean to say when he first player make amy move then that move should also get reflected on the other PC.
Could you please tell me how to do it.
Which Java technology I can use.
Should I use RMI or CORBA for this.
Thanks
Uttam Kumar