I intend to Overclock a Duron 800mhz CPU, so I am a bit concerned about Cooling. Basically the CPU Heatsink appears to be set lower than the 4 rubber supports on the corners of the CPU, whereas my Cooling Fan has a Flat Bottom, will this leave an air gap between the CPU and the Cooler? Should this gap be filled with Heat Conducting Compound? Have I got the correct Cooler (the box says that it's for an AMD Duron/Athlon), or should I have one with a step in the bottom to match the CPU Heatsink? Sorry if these questions are a bit basic but I am a newbie to this Overclocking World. Thanks for any advice. 
