Hmm, I looked on Metacafe and couldn't find the video I saw before. I'm pretty sure it was by KipKay, but I looked through all his videos and didn't see it. It was really in-depth and easy to follow.
You can get the little laser pointers in like gas stations and stuff for like 5 bucks. You'll need one for this, all you do is replace the regular diode with the DVD laser diode, and supposedly it becomes really powerful.
If someone does it and makes it work...post a video.