I just realized that the link I just posted is probably the one you said was confusing. Doh!

If you want a simple plan, here it is:

1. Put some flexwatt in there
2. Put an AC fan in there
3. Hook up a thermostat (in there?)
4. Drill a hole in the side and run all the cords outta there, then tape over that hole
5. Put some egg bins in there
6. Wait a bit
7. ???
8. Success!