Cannot add maven repositories in NetBeans 7.0.1

[elbuild.it]

Hi,
I'm trying to add some repositories to Maven but apparently it doesn't work. I'm using the Maven Repository panel, i click the "Add repository" button and fill the form. The repository appear on the panel but they don't show anything inside and also the dependencies in my projects don't work.

I tried with two different repositories, the one from PrimeFaces (http://repository.primefaces.org/) and the one from EclipseLink (http://download.eclipse.org/rt/eclipselink/maven.repo/).

I'm quite new to maven so maybe I am missing something....

Thanks for any help
Eve