I have an 80gb Ipod Classic. I inserted one of the blades of the plastic tool and then just slid it long the seam all the way to the corner. While prying up the blade on the corner it open up the end slightly. With my finger nails holding the long side open I slid the tool across the short end and around the corner and to the other long side. The whole thing popped open with no damage to small clips on the inside. I removed the battery cable and layed the back side over and replaced the battery without fooling with the other cable. You basically have to work the plastic tool like you would open an oyster.