As in Running JMS Client Programs on Multiple Systems, the two servers are named earth and jupiter.
The Application Server must be running on both systems.
Which system you use to package and deploy the modules and which system you use to run the client depend on your network configuration (which file system you can access remotely). These instructions assume that you can access the file system of jupiter from earth but cannot access the file system of earth from jupiter. (You can use the same systems for jupiter and earth that you used in Running JMS Client Programs on Multiple Systems.)
You can package both modules on earth and deploy the message-driven bean there. The only action you perform on jupiter is running the client module.