JBoss IDE 1.6 is not compatible with Eclipse 3.2.
Either use JBoss IDE 2.0 beta, or downgrade your eclipse to eclipse 3.1. If you use the JBoss IDE 2.0 beta, most of the tutorials will be outdated as documentation has not yet caught up with development.
Well thanks for your support, I will try the beta. Does the IDE include EJB 3.0 tools ?