When you first run the application, it looks for your map data on the CD drive, and for any Memory-Map cartography installed on the hard drive.
The “Refresh Map List” dialog box appears to let you tell the software where to look. Click on “Add…” and browse to the folder containing your map files.
Click on OK, and the Map List dialog should show a list of the names of the maps.
If you want to add more maps later, click the Refresh Map List button in the Map List dialog.