how do I extrude an OS map into a 3d terrain model

[d4vidt]

I am currently preparing a 3d terrain model in map 3d 2009, and wish to indicate landmarks using coloured rasters of OS survey maps. how do I extrude the map onto a 3d terrain

[Cad64]

Since you got no replies in the 3D section, and your question pertains to Map 3D, your post has been moved to the Map 3D section.