[Zope] Document Library & Zope

Dear Group, I am new to Zope and I am helping few students on their academic project. The project is to create a simple Document Management System workflow. we are evaluating various option and I came across the module INFRAE's "Document Library'. BUt I cannot install it in my Zope3 or Zope 2.10.4. As per the Document Library's install.txt it is trying to install a new Zope. Is there any way I could install in my existing Zope. Appreciate any pointers in this regard. Best regards Dominic PS: I would like to know how to integrate with Silva (Hope this is not related to this group)