Items needed to download waypoints?

I have been using a GPSr for afew years for hunting and ATV riding. I an new to Geocaching and have found that there is a little more to using a GPSr. I have just signed up as a premier member and want to download waypoints to my RINO 110 and/or my Garmin 12. What do I need to do that and where do I find it?

The most common, free program is EasyGPS. Start there, and then you might want to move on to more advanced programs.