Rui,
we did not do this specifically because we do not want it based on the templates that much. We need the same ELEMENTS on the pages, but you can make them look however you want, as long as they can do what the real ones do.
We also do not expect you guys to create actual smarty templates, just the HTML, we will make them dynamic.
Its probably best for the stats page to check the Admin Stats also (
http://natsdemo.toomuchmedia.com/admin_stats.php) so you see what it would kinda look like with rows of data in it.
You can of course also check any other NATS program to see how they made them look to get some ideas and the like.