The PSU should come right out, and the DVD burner might be anchored down with two small screws. Undo those and it should come right out of place.
The sled should be relatively easy to remove, as it is located on the upper face of the burner.
Your positive IN will show a thick circle around the attachment point so will your PD (unused). However, your negative will show a thinner circle around its entry point, and they will be arranged in the same order as this schematic. Solder your wires into the proper points and your end product should look like figure two above.
Clip off all of the white plastic wire connectors. Sort the wires by colors; this will make the job way easier. Find the black and green wires, clip them, and then tie them together (make sure you cover the exposed area with electric tape) The yellow wire will be your (+), the red wire your (-). Solder the wires to your module wires as directed in step eight. You may want to glue the second heat sink to the module chip, since this chip might get really hot.
The laser can run for prolonged periods of time without getting hot since the heat sinks will help dissipate the heat from both the diode and the module.
