Reboot your machine and open nvidia-settings up with the Terminal or your dash and under your GPU heading/Thermal Settings list, you can now change fan speed.
Type nvidia-xconfig - cool-bits=4 into the terminal and this will add the proper settings in your /etc/X11/nf file and back the previously created one up.
This will create an /etc/X11/nf file that does not, by default, get created in 12.04 Precise.
Type nvidia-xconfig into the terminal.
Type nvidia-settings into the terminal and in the NVIDIA X Server Settings window that pops up, click on nvidia-settings Configuration and then click "Save Current Configuration" and then exit the applicationThis will create ~/.nvidia-settings-rc for you.
Type gksu nautilus in Terminal and allow your group read/write access to /etc/X11 (or use the chmod commands if you prefer the terminal.
Here's the steps I took to enable fan control in the nvidia-settings. Thank you, Temüjin! That website didn't exactly show me the way, but it did get me searching in the right place.