I'm new to EJB3.0. When i tried to install "jboss-4.0.4.CR2" it ask to select an installation(Configuration) option, when i select ejb3.... in the discription it says "A ejb3 profile supporting the full ejb3 spec with tomcat. Note, this requires a JDK5 runtime and is not a J2EE 1.4 compatible configuration.". wot does this mean? I mean the the folllowing sentence "is not a J2EE 1.4 compatible configuration". Can't we deploy ealier version of ejbs(2.x) if we install with this configuration option?