Translation of zentrieren

If you press "Conjugate now" or "Display now " on the default demo you will be taken to an internal page for conjugations (you stay on the same site), but in a very different section, hope that's OK.
I almost forgot to tell you, that the water was brown, despite of its name... Anyway, as I was already close to my next destination I went and consulted with a tourguide of Austrian travelers.
I got a nickname. Please answer the questions from my previous email (below), except number 4, which is answered on the Vocabulix's faq page. I am ready to start tomorrow, but i need the info first.