configuring the weblogic to work with eclipselink 1.x version instead of default 2.x verion

my project is configured to work with jpa 1.0 and using eclipselink1.0.jar. It is not included in the ear. So when I deploy the ear file in weblogic ( version-1035) , it is taking the default eclipselink version(2.0) as I see in the console:
INFO: EclipseLink, version: Eclipse Persistence Services - 2.1.3.v20110304-r9073

I tried putting the eclipselink1.0.jar in the domain/lib and also setting the java-option as -Dweblogic.ext.dirs=[path]\eclipselink-1.1.0.jar; But to no avail.

How can I make the weblogic to work with a eclipselink 1.0.0 version.

Thanks
Sankarsan