[Zope] pcgi authentication

[meden@ccpace.com]

We've got Zope running behind IIS as a pcgi process.  Currently we 
are using the jcntuserfolder product to do authentication, but we are 
having some trouble.  The problem is that we want to allow anonymous 
connections to our site.  So we have the permissions to the zope.pcgi 
resource set to "allow anonymous" and "challenge response" through 
IIS.  When we try to access the root level "manage" screen in Zope we 
are getting the manage_menu page in the left frame, but we are 
getting the index_html document in the right frame instead of the 
mnage_workspace page.