Man its been twelve hours, not to mention you posted at night so no ones gonna visit between 8PM and 9AM. Majority of hits are daytime so just sit back and take a deep breath. You think an attitude like that makes people wanna help you out? If so you got it wrong pal. Not to mention theres probably been nearly 20 threads on exactly this topic, if you did a LITTLE looking you could find one. Or maybe just type overclocking into www.google.com
Regardless, Ill let you in on a little bit.
Overclocking is merely the idea of pushing hardware to a higher performance. Tons of things can do this, from BIOS settings to extreme cooling. Common overclocked parts are: processor, RAM and GPUs.