This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Please don't post the same question in multiple forums. If we haven't answered your question to your satisfaction, it may be that the community doesn't know the answer. You may have to install Java 5 and do some testing, as Stefan suggested.