Its OK I think im finding the solution....
I will try it i think its going to solve my problem ...
Support for specifying custom loader repositories has been extended to SARs, EJB jars and WARs in addition to EARs. In addition the loader repository configuration allows for child first class loading rather than the parent delegation model. This allows deployments to override classes from the server level. To enable deployment first class loading use a configuration fragment like:
in the jboss-app.xml, jboss.xml, jboss-web.xml or jboss-service.xml descriptor. See the corresponding descriptor DTD in the docs/dtd directory for more details.