You are dealing with very high power lasers that will blind anyone in under half a secound if shined into your eyes or anyone elses eyes!
Now onto the first PIC! :D
Step 1: Parts
Diode in aixiz module 19 USD. http://modwerx.com/shop/index.php?main_page=product_info&cPath=9&products_id=12&zenid=b568d891f0e55aea465a922bbf42bb62
Heatsink 30 USD http://www.laserpointerforums.com/laser_pointer_forums_3/forum/tutorials-help-repairs/36799-tutorial-my-pocket-pal-blu-ray-laser.html
Driver 30 USD ( buy it preset to 115ma) http://hacylon.case.edu/ebay/laser_diode/Micro_FlexDrive.php
Host flashlight 3 USD
Total less then 100 USD SHIPPED!!
Step 3: The polarity
Desolder all the leds on the pcb board.
Now file down the edges on the metal ring.
Solder wires onto the postive and negative pins on the diode in your heatsink, put the wires through the o-ring that comes with the heatsink then you put them through the shiny thing from the flashlight and solder them to the flexdrive connection pads.
Then solder wires onto the - and + of the driver and then put the wires through the holes on the pcb board and solder them on.
Go to step three on how to put it all together.
Step 5: Finished!!!!!!
If you need more help this guide is great too! http://www.laserpointerforums.com/forums/YaBB.pl?num=1213338268/0#0
This will last WAY longer then kipkays lasers cause his DON'T use drivers or heatsinks making them die VERY quickly.
Hope you enjoy your laser!
(I did not design this laser or make any of the parts I linked to I only made this guide.)