I've bought a new laptop with Suse Linux Enterprise Desktop pre-installed.I've trouble with installation of new applications.To start with, I would like to install emacs and mercurial. When I try to use zypper I'm asked a username and password:

$ zypper install emacs
Recupero dei metadati dell'archivio 'HP-SBSO-Emergency-Channel' in corso [\] richiesta l'autenticazione per 'https://nu.novell.com/repo/$RCE/SLED11-SP1-HP-CNB-Unregistered-Updates/sle-11-i586/'
Nome utente:
I registered throught the novell website and get credential (which I'm using to post here). But they don't work for zypper...

I'm stuck, I've been experiencing big difficulties in finding information on suse website. Any help?