When to use ejb-jar.xml?jboss.xml?

I want to reference/lookup my EJBs using the java:comp/env context....what xml do i need to edit?ejb-jar.xml?jboss.xml? I'm really confused!

I am not using jboss.xml in my jar file still i can access my entity beans with local interfaces from session bean using java:comp/env context

Originally posted by Paulo Aquino:
I want to reference/lookup my EJBs using the java:comp/env context....what xml do i need to edit?ejb-jar.xml?jboss.xml? I'm really confused!

Originally posted by Parul Patidar:
I am not using jboss.xml in my jar file still i can access my entity beans with local interfaces from session bean using java:comp/env context

Could i take a look at your deployment descriptors?

You can usually get by with just using the ejb-jar.xml if you do not want to do anything vendor-specific with your EJBs (or whatever resource you are describing with your DD.)
I ran an entire enterprise application using JNDI look ups for the data source and the ejb-jar.xml to define BMPs.
The minute you want to migrate to CMP or something that requires tie-in with the container, it will be time to use the jboss.xml or whatever container specific file fits your app server.