Yup, lots of info on here about DIY Incubators.
Our incubator is an 81 bottle LG wine fridge.
The Setup was simple:
1. Removed the compressor
2. Drilled an entry hole for all of the wiring
3. Installed 50w heat rope through out the fridge
4. Hook up the Herpstat
5. Installed a 12v DC variable computer fan to cycle (not cool) air
6. Test and Regulate temperatures
7. Add Eggs!