Remove the three (or on some models, four) TR8 security Torx screws on the underside of the PS3 slim.

What's that, you say? Security screws? Yes, that's right. These screws have a pin in the center of them that prevents an ordinary Torx screwdriver from working. These screwdrivers are widely available, just not quite as easy to come by as a normal Torx.

Sony did this to prevent people like us from taking it apart.

This seems a little spiteful-- hardware hacking is a fine American tradition. No worries, we'll make sure it's easy for you to get these screwdrivers.