WOW I just started doing that today (well not Berlin)
Pick the style of map you want and when you have the size and template go to Draw->Insert File and place your png or bmp image of Berlin and then you can trace over it.
Take a look at what I did with an old fantasy map from Mage Knight.
We are adding working DXF and DWG import for CC3 to be ready in about six month's time. You might be able to get it in via Fractal Terrains, depending on the format.
Comments
Pick the style of map you want and when you have the size and template go to Draw->Insert File and place your png or bmp image of Berlin and then you can trace over it.
Take a look at what I did with an old fantasy map from Mage Knight.
http://shop.euratlas.com/maps_gis/gis_1400.html
Is the ProFantasy software capable of that?
Have you all given any thought to any of the other vector graphics formats?