Running with Amber outside of the resin container

I'm trying to run Amber outside of the resin container.
My problem is that I can't create an EntityManagerFactory.

Running inside the resin container works wonderfully.

I have a META-INF/persistence.xml in my classpath. As well as the
ejb3-0.jar and resin.jar. When my code comes across:

EntityManagerFactory emf =
Persistence.createEntityManagerFactory("mikeexample");

The emf variable is always null. No exceptions are thrown.
My persistence.xml is very simple:

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
version="1.0">
  <persistence-unit name="mikeexample">
    <class>example.Course</class>
    <exclude-unlisted-classes/>
  </persistence-unit>
</persistence>

One last note... if I try to the createEntityManagerFactory( String,
Map ), a UnsupportedOperationException is thrown.

All of the examples I found on caucho's site create an EntityManager
from with the resin container via a servlet...

Any ideas / thoughts would be appreciated.
  -Mike

P.S> I do believe that the javax.persistence API allows one to run
outside of the container...