My application is based on Hibernate 3.2 and Spring 2.5. Here is the transaction management related snippet from the application context:
You only need the bit with flushing and clearing the session. Leave transaction management to Spring. Use sessionFactory.getCurrentSession() to reach the session that Spring has already opened for you. Also, Spring's recent recommmendation is to avoid HibernateTemplate and work directly with Hibernate's API. Inject SessionFactory to your dao-bean.