If only overclocking your PC were as easy as installing some software. In the "old days" and probably on a few remaining motherboards, overclocking involved setting physical jumpers and working with clock multipliers. Fortunately, these tasks have been simplified in newer motherboards with BIOS setups that allow these changes in the BIOS software itself. No need to provide a blood sacrifice anymore.
Don't panic--this won't be an electrical engineering lesson. There are a few things that overclockers must understand, though, about their machines in order to be successful.