This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
1. You might want to check JNDI naming conventions (in general and for geronimo).
2. Use Geronimo's Admin Interface to actually check under what name the JNDI object is bound. You can use that for looking up.