[Zope] Access problem

Hello, First all, I'm zope newbies, I try to use it since four days. I write to this mailing, because I failed to connect to zope manage page. The problem is authentification, however my access file is good. I try each encryption/encoding rules, but I always this message "You are not authorized to access this resource.". I don't know what do ? Information: I'm on debian unstable. harobed