Download the .GPX file to your device.
Open c:Geo
Click STORED icon
Make sure it says 'Stored' on the upper left side. If not, use the drop down to chose 'Stored'
Click the menu (3 vertical dots) in upper right corner and chose 'Import'
Click on 'Import from Android' (if on your phone)
Use the hamburger menu (3 horitontal lines) in the upper LEFT side to navigate to your downloaded GPX file.
Click on the file and it will say 9 caches have been imported, click OK.
Click the back arrow to go back to the c:Geo main area then click Live Map icon.
Go Find Them!