For ZUBB 0.8 and above:

• Download and untar the product package and you will end up with a ZDBase folder
• In the ZDBase folder move the /import/ZDiscussions.zexp into your Zope/import/ directory. This should be at the root level of your Zope installation (unix or windows)
• Move the entire ZDBase/ directory into your Zope Products directory which is either at the Zope install root level or in /lib/python/Products/
• Restart Zope
• In the management interface go to Control Panel > Product Management and click on the Export button.
• In the "Import file name" put ZDiscussions.zexp and click Import.
• Find a place you want to create a ZDiscussion Topic and choose it from the Product list
• Go into the topic and select the "Regenerate methods" tab in menu tabs and click the "Regenerate" Button
• If this is not installed in a CMF site, uncheck the "authentification_required" option in the options menu.
• If you want to allow anonymous posts under the security tab give anonymous Add ZDiscussions Item permission

This is for ZUBB 0.7.0 and before:

• Download to the root of your Zope installation (ex: /usr/local/zope)
• Untar the file (ex: "->tar xvfz ZDiscussions-0.1.1.tar.gz") and restart Zope
• In the management interface go to Control Panel > Product Management and click on the Export button.
• In the "Import file name" put ZDiscussions.zexp and click Import.
• Find a place you want to create a ZDiscussion Topic and choose it from the Product list
• WARNING Give it an ID AND a TITLE (if you don't all your posts will be "No Subject" and you will no be able to give it one later)
• Go into the topic and select the "Regenerate methods" tab and click the "Regenerate" Button (see note below for older versions of Zope
• If you want to allow anonymous posts under the security tab give anonymous Add ZDiscussions Item permission