The registration option don't appears after Avast have been registered, so i can't provide the registration window that in the hebrew language, the buttons didn't appeared at all, and the other one was an alert of a threat detected by the heuristic algorithm, which i can't cause it to appear again manually.
Update 28.6.2011: I found another bug in the hebrew interface of Avast: the time is inverted (Hour is right, mins is left, mm:hh).
I can't set attachments for dispaly in the forum at all, as their maximum allowed size is a mere 200KB.