Error starting JBoss in netbenas6.1

Hi,I am getting this error while starting JBoss in netbeans6.1
RarModuleJSR77Deployer -> java.lang.NoClassDefFoundError: org/jboss/resource/metadata/ConnectorMetaData.

First things first: if you start JBoss AS from the command line, does it start without problems?

Also, what version of JBoss AS? And which JVM? And which OS?

m using,JBoss version: jboss-5.0.0.GA-jdk6 ,jdk1.6 and the OS is XP
i changed the jdk version to 1.6.Now the below mentioned error in the trailing msg is not appearing but,now i get these errors,

1. "java.lang.Exception: Port 8083 already in use."

2. "vfsfile:/F:/Project%20documents/jboss-5.0.0.GA-jdk6/jboss-5.0.0.GA/server/default/conf/jboss-service.xml -> java.net.BindException: Address already in use: JVM_Bind"

Port "8083" is one of the default port being used by JBoss. If you have an "Active Port" application, check which application is using port "8083" and stop that application before running JBoss. (Usually if you're running an IM application like yahoo messenger, it will also use port 8083).

If you don't have "Active Port", edit the file "jboss-service.xml". Change all default ports into a different value by putting "1" at the end of the current port number, for example, change "8083" to "80831". Do this with the other default ports as well.

i could not find the value 8083 in the file jboss-service.xml to change

Look in the server/xxx/conf/bootstrap/bindings.xml file.