Just updated the documentation. How to use Seam-managed Hibernate session read here: http://tacos.sourceforge.net/tacos5/tacos-seam/hibernate.html
A Hibernate example application can be found here: http://tacos.svn.sourceforge.net/viewvc/tacos/tacos-5/trunk/tacos-seam/booking-example/ This app is a clone of http://seam.demo.jboss.com/home.seam and uses Tapestry/Seam. Just check out from svn and run it. You don't need any database since the demo uses HSQL. The app is not finished yet but can be used as example.