In QGIS, go to the menu "Plugins" > "Plugin manager" and check "Add Delimited Text Layer":
Figure 7: Activating plugin
Click in the little icon that just showed up.
Note: In some versions of QGIS the icon will not show up, if this is the case, you can access the function through the plugins menu.
(Plugins > Delimited Text > Add Delimited Text Layer)
http://linuxlab.sbs.umass.edu/intro-fossgis-umass/index.php?title=Image:Gpslab_pluginicon.png
Then, fill in the fields of the plugin wizard (some of them may fill in automatically):
1. Browse to the text file with the coordinates: "Geocatching.txt"
2. Name the new layer "geocaching" or "cache_lab" or whatever you prefer.
3. Define the delimiter you used, in this case comma: , (dont use "")
4. Parse the file
5. Choose the field name that corresponds to Easting and Northing ("x" and "y" in this case)
Add the layer and Close.
Figure 8: Add XY data wizard