Using a computer to send the cache coordinates to your GPSr can avoid input errors that frequently plague the cacher who put them in manually. Although your GPSr may come with a "waypoint manager," GSAK can be used to not only filter out a specific list of caches, but it can easily send the coordinates to your GPSr.
This brief video will show you how to set up GSAK to "talk" and to send your cache waypoints to your GPSr.
You will need to have FlashPlayer installed in order to view this video.