Okay, the last thing that holds us from baking a normal map, are the missing UV-coordinates. We could, of course, do that in an external application, but we can also use the new plug-in: UV-Master. Let's see how this can be done.
Note
We can browse and download plug-ins for ZBrush on www.pixologic.com. Once downloaded, plug-ins are installed by putting the downloaded files into the right folder of ZBrush. If successfully installed, the new plug-in will then be listed under Zplugin after the next restart of ZBrush.