[jbpm-dev] Integration query

Hi all. We developed an application for our client in Struts 2.x, EJB 3.0, MS-SQL server 2k5 and application is running on JBOSS 4.2. Can we integrate our application directly with JBPM i.e. without using Spring or any such another third party? If yes which version of JBPM is suitable for us. Thanks in advance. Thanks & Regds, Amol M. Joshi System Analyst Nihilent Technologies Pune India