Exactly where did I take that picture?

I'm an eager Geocacher. Geocaching is a sport where the goal is to find some "treasures" that are hidden all over the world. See geocaching.com for more information. To find them, you need a GPS (Global Positioning System Receiver). On these trips, I always bring my digital camera and usually takes lots of phots. Some time ago I got an idea; The GPS stores your position every 10th second, the digital camera stores the exact time the photo was taken. Why not write a program that matches the time in the GPS file and in the picture files to find the exact coordinates for where the photo was taken? So I sat down programming. Today, I was for the first time able to calculate the position for a series of photos. The coordinates will be stored inside the EXIF meta data of the image file so the information stays with the file. A beta version of this program will be available shortly on the web pages of BR Software.