I guess it's ok to talk to the applets from the host where the applets got downloaded, but applets can't talk to each other.
Maybe if you put your server code on a servlet on you hosting.
How much expensive is that???
There's this other way, not sure if it would work out for me or not, but they do an http message and a cgi script. It's supposed to work through a firewall. I just want to do turn based games so I don't need much speed.