Eclipse is sooooo much faster than netbeans, you’ll enjoy it.
In eclipse when you create a project in your workspace, you end up with something like
(eclipse-install-location)/workspace/myproject.
I place the associated 'dll in the myproject directory. If you do this while eclipse is up and running, do a right mouse click on the project within eclipse and “refresh” this will insure eclipse sees the dll’s. This is not needed if the eclipse tool is not running.
To add the xith jars you can construct a cvs connection and download the current source or you can grab a recent prod release of xith and add the jars to the build path of your project. If you right mouse on the project, select properties, select build path, you can add jars there.