First of all thanks for you r quick response.
I saw the GateIn site and I went there. When I click on Developer Forums at this page - http://www.jboss.org/jbossportal I achieved the same forum where I wrote this discussion (question).
I understand the first part of upgrade the version to 2.7.2 and I will try it right now but I didn't understand the EPP part, this is something else that I should do or this is part of the upgrade? which support folks can help me?
Thanks again!