I don't know why this is true but it is:
If you access Project Properties from the top menu bar, the XDoclet and Packaging configurations are not available.
If, however, you click your right mouse button on the top item of your project (the project's name) in the left-hand Package Explorer window, you will see that this Project Properties window does, indeed, contain XDoclet and Packaging options.
Strange but true ...
... just to make it clearer. You need to click theProperties option at the bottom of the window that pops up with your right-click
Thanks Adrian. I appreciate your help. I tried what you said and it works fine now. I guess there is a bug about "not" being able to access XDoclet Configuration from Project > Properties panel. May be JBOSS guys need to be apprised about this.