javax.naming.NameNotFoundException at Jboss4.0.3, ejb3.0

[kumachan]

Hello.I'm sorry by poor English.
I

Environment:
JBOSS4.0.3 + jboss-EJB-3.0_RC5-PFD
jdk1.5.0_06

Remote Interface:
package sample;
import javax.ejb.Remote;

@Remote
public interface Sample{
void func();
}


Stateless Session Bean Class:
package sample;
import javax.ejb.Stateless;

@Stateless
public class SampleBean implements Sample{
public void func() {
System.out.println("execute func.");
}
}