Right-click Current Drawing and click Coordinate System.
Add the city boundaries to your map by dragging and dropping a source file to Display Manager.
Use Windows Explorer to navigate to the folder in My Documents where you copied the sample files.
The location of My Documents varies, depending on your operating system. For Microsoft Windows XP, it is usually C:\MyDocuments. For Microsoft Vista, it might be C:\Documents and Settings\Administrator\My Documents\Map 3D Tutorials.
Resize the AutoCAD Map 3D window and your sample data folder window so you can see both of them at the same time.
Drag and drop the City_Boundary.sdf file onto the Display Manager, just above the Map Base layer.
Drag and drop the city boundary file to Display Manager.
The Redding city boundaries appear in your map.
Click Save AsAutoCAD Drawing. In your tutorials folder, name the file build_map1.dwg and click OK.