EJB 3.0 Tutorial Problems: How do I get it to work? [Code attached]

Hi,
I am attempting to run an example EJB application from "Pro EJB 3 - Java Persistence API" but without success.

The error message I am currently getting is:
-----------------------------------------------------------------------------------------------------------------
--- MBeans waiting for other MBeans ---
ObjectName: persistence.units:jar=EJB.jar,unitName=EmployeeService
  State: NOTYETINSTALLED
  I Depend On:
    jboss.jca:name=jdbc/EmployeeDS,service=DataSourceBinding
  Depends On Me:
    jboss.j2ee:jar=EJB.jar,name=EmployeeServiceBean,service=EJB3

ObjectName: jboss.j2ee:jar=EJB.jar,name=EmployeeServiceBean,service=EJB3
  State: NOTYETINSTALLED
  I Depend On:
    persistence.units:jar=EJB.jar,unitName=EmployeeService

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.jca:name=jdbc/EmployeeDS,service=DataSourceBinding
  State: NOTYETINSTALLED
  Depends On Me:
    persistence.units:jar=EJB.jar,unitName=EmployeeService
-----------------------------------------------------------------------------------------------------------------

The file structure of the application is:
 + EJB [Project name]
 ---+src
 --- ---+examples.models
 --- --- ---+Employee.java
 --- --- ---+EmployeeService.java
 --- --- ---+EmployeeServiceBean.java
 --- --- ---+EmployeeServlet.java
 --- ---+META-INF
 --- --- ---+MANIFEST.MF
 --- --- ---+persistence.xml
 ---+JRE System Library
 ---+Java EE 5 Libraries

I think the problem is that I have not defined EmployeeDS as specified in the persistence.xml file however I'm not sure where this would go.  Also from looking around on Google for well over an hour I'm guessing I'm missing a jboss-ds.xml file?

Please can someone point out the mistakes and perhaps suggest the easiest way I can test the servlet when deploying with either JBoss or Glassfish.

Thanks in advance.
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