For the 3D add-on maps for the Early American Wars, Civil War Battles and Napoleonic Battles games, the files need to go into a new sub-folder inside the main game folder. This folder should be named \\Maps (note the s on the end, which is different from the \\Map folder already in place). If you unzip the package to your main game directory and use the "Use Folder Names" option this sub-folder will be created for you. Otherwise, you'll need to manually create it and put the .bmp files into it.