Big Timber-
Looks like Two Beards has given you the link to Jessie's page concerning game cameras. There is a seperate page that deals with making your own camera, they call it a homebrew, here is the link.
Homebrew home page That's where I found the information necessary to build mine.
When you get to Jessie's page you'll quickly realize that there are several variations on making a game camera (i.e. using different sensors and cameras). To me the website was confusing, so I had to spend some time deciphering which sensor and camera I was going to use. Here's what I settled on using and it is working really well:
Camera: Cannon Owl PF date camera. Bought at K-mart
Sensor: Mainstay WM2 (formerly Regent MS20). Bought at Walmart
Box: 6x4x4 outdoor electrical box. Bought at Lowe's
I also did the low power mod's for the sensor. I'd also highly recommend getting a desoldering iron. I didn't do this at first and wished I had, it really simplified the project.
If you've done that much soldering, you'll think this project is a breeze. Like I said, I'd never soldered anything and I was able to accomplish the task.