After downloading is complete click on this icon to start installation of Baja Topo Maps to Mapsource. (Note: some email programs will not allow .exe programs, so right click on the program you just downloaded and rename the file with a .exe on the end of the name.)                    
 

Once you click on the icon above it will take you to this screen to begin download. Click Next

Select the SAME drive that your Mapsource program is installed on. (Example: C:\ drive)

Once the installation is complete, open up your Mapsource program,select the Baja map from the dropdown menu on Mapsource. You should now have Baja topo displayed. If you dont Email us and tell us what