Configuring Networker to backup DFS-R

So I'm maybe being a little thick, but I'm having a bit of difficulty getting DFS-R backing up.

The networker 7.5 admin guide is just a little light on specifics, so I was wondering if anyone had direct experience of it?

It _seems_ I just need to concurrently back up various bits of my DFS infrastructure, and it all just ... sort of magically works.

BUt I must confess, I'm a little hazy on how it all bolts together, and therefore quite what I might be doing wrong.

Does anyone have some specific details on what I might need to do to get this to happen? Specifically I'm thinking in terms of configuring a backup by UNC path, but 'somehow' keeping the DFS elements sane.