For basic map is possible to use for example:
- create a background as a gray relief - map for PDA from CST without textures
- printscreen from any www map like www.mapy.cz, resize, rotate and place as a layer to background relief
- repeat this steps for all area
From this basic map is a possible to take trees map (coniferous), city, roads, river.... but precision is not very high.
We have at ftp folder Maps, where this basic map is atteched for Czech republic
Relief
Placing map from www
Final basic map
Selection of trees areas
Coniferous map (you need resize it 2x at the end)