That's for the 20GB version. For the 5/6Gb it's pretty easy. Unscrew the 4 screws behind the battery, and the 2 on the top. Then you'll see 2 plastic tabs on the top, 1 beside the heapdphone jack, the other beside the microphone. Pry those up slightly while pulling the front part of the case off. Once it's apart at the top, just keep separating the 2 halves.