The servlet is running on orion so you don't need to elaborate on the
context.
This should get your ejb:
Context context = new InitialContext();
// Get home interface
CommandHome cHome = (CommandHome)context.lookup("Command");
// Create a command object
Command command = cHome.create();
Command for me is a stateless session bean.
snippet from orion-ejb-jar.xml
<enterprise-beans>
<session-deployment name="Command" location="Command"
wrapper="CommandHome_StatelessSessionHomeWrapper1" max-tx-retries="3"
cache-timeout="60" persistence-filename="Command" />
</enterprise-beans>
Good Luck!