[Zope-CMF] Upgrading Zope and web apps

[curtis.horn@st.com]

     Sorry if my questions are to basic, I'm relatively new to zope.
     
     I've been using zope mostly as a web server and a place to keep my own 
     documents.  I'd like to make my site public (on company intranet 
     anyway) but first I want to know how to go about upgrading zope 
     itself.  My concern is that I will have something up and have to take 
     it down for a prolonged period, or worse yet lose content.
     
     Second question is about "web" apps.  I'm thinking of creating an 
     application that will be distributed across many tools and using zope 
     as the "glue" to hold them together.  Making results and data go to a 
     central location for all to use.  Any suggestions?
     
     
                Curtis