1) GPS MAPS: I cannot install Mapsource
If you downloaded the free link from Garmin to install Mapsource - and it gave an error during the installation informing you that you have to have another Garmin software product installed on your computer in order to complete the Mapsource installation, you can try to install MapInstall first, and then try to install Mapsource again:
Click here for the download link to MapSource in order to install it: