Please don't cross post.
ok,,i got it..
are there anybody,who can help me?
Sorry. Your question is somewhat vague in terms of defining exactly what you mean. There is a walkthrough on JNDI lookups and deployment descriptors at http://www.amitysolutions.com.au/documents/JBossJNDI-technote.pdf. It describes references and finding resources in a J2EE environment. If this is not the question you are asking, please explain in greater detail and perhaps with an example what you are trying to accomplish.