[Zope] How to use Zope2 products in Zope3 ?

Hello I have some Zope2 products I want to use in Zope3. First up these: -- LocalFS -- ZopeShortcut -- SWFFile Confused by changes... I can't find any 'Products' or 'Import' folders in my Zope3 instance... Does this mean all those good products have to be rewritten using some new super-complexificated Zope3 syntax? I hope not. What am I missing please..? Thanks for any advice Jason