BetalJuice

This is the model http://shop.Groundspeak.com/productDetail....p;ProductID=182

Hello, I need some help with my new geocaching GPS, it will not register on my computer, It says I need some sort of disc or something to fully install it. The GPS is green and kinda feels like spongy rubber, The cord connects from the GPS to the front of my computer. I know it works because it displays multiple options and such. Can someone give me some ideas of what to do?