The Wii IR camera is a beautiful thing. It has an integrated processor which outputs the X and Y positions and size of the 4 brightest IR points that is sees. This can be very useful for tracking in robotics or human interfaces. Enjoy!
Step 1: Extract the Wii IR camera
You'll need to rip apart the case. It has some crazy three pronged screws. I didn't want to completely trash the case so I made a small tool to take it apart.
Now you need to desolder the 8 pins and the 2 struts holding the camera on the board. I used some desoldering braid. It wicks the solder away and makes it easy to get the camera out. Be careful, don't break the camera!
How to use desoldering braid: http://www.youtube.com/watch?v=AcbezX8TrOU
You might want to keep the rest of the parts. You might be able to scrap other parts. Also, If you decide later to use the Wiimote again, you could always put the camera back in.