There are some fan controllers at newegg that look really nice, I found this one
http://www.newegg.com/app/ViewProduc...999-151&depa=0 which mounts into a free 5.25" bay, monitors system temp and voltage, and recieves power directly from the power supply.
A thin layer of thermal paste is enough to transfer heat from the cpu to the heatsink. Actually I've heard too much increases the temperature the CPU runs at. Cleaning the cpu with salon-grade acetone (100% pure - doesn't have any mosturizers etc, so it wont leave residue), and then applying artic silver thermal paste is the best way to acheive thermal conductance.