As you might know, if you frequent these boards on a semi regular basis, I have become an avid BB fan.
One of the reasons for switching to the BB Curve was the temptation of built in GPS! The Curve gets within 1.0m accuracy of your location, and that is pretty blimin good!

You'll need an account here http://www.geocaching.com and some software from here http://www.geocachenavigator.com
Here is a link to how it works, http://www.geocaching.com/mobile

Once you're cracking with that stuff, you'll be well on your way to Geocaching directly from you Curve, and it rocks! There are truck loads of caches all over New Zealand and round the world.

Anyways, thought I'd let you all know it works like a charm on the BB 8310