[Zope] Netscape Web Server Plugins

Does anyone know where I can find the Netscape Web Server Plugins that are mentioned in the Webserver doc file? In Webserver it says " Like Apache, Netscape does not pass HTTP Authorization information to CGI scripts. We have a plugin at our website that addresses this. http://www.digicool.com ". I haven't been able to find any plugins at either digicool.com or at zope.org. TIA, John M. Solberg PLATINUM technology, inc.