Does anybody migrated a project from JBoss 4.0.5 to JBoss 7?

[popoctavian]

How difficult it could be to migrate a project from jboss 4.0.5 to jboss 7.

This project is using:

EJB3 RC 9 patch 1

Hibernate 3.2.6

jgroups 2.4.1

jbossws 2.0.3

jboss cache 1.4.1

Thanks.