Just wanted to describe my experience with deploying an app built on 2.4 to jboss 3. After stuffing around with the datasource config for a little bit, everything worked nicely without any redeployment. I wanted to mention this because I have been a bit scared to look at 3 as an option fearing too many changes. However I didn't even have to resort to the manual which I think is a big well done to all the jboss guys.
This is a frequently asked question in the forum. Could anyone please help me out with a document for migrating the components from JBoss 2.4 to JBoss 3.0. Would be interested in deploying EJB's, JSPs, alternative to jboss.jcml file in 2.4.