To provide a custom map, go to the Common section of the Options menu and change the Default Map value to Custom.
Finally, provide shape data using one of the following ways.
Specify the path to the .shp file using the Custom Map URL option. Attributes from the corresponding .dbf file located in the same directory will automatically be included in the map.
Load the existing shapefile using the ellipsis button next to the Custom Map File option. In the invoked dialog, locate the required .shp file. Use the Custom Attribute File option to locate the .dbf file containing attributes for each shape.