I tried my hands at overclocking CPU at my home machine and not on my work system. I must say, i am in trouble.Will have to purchase a few hardware components :(.
Writing this so that somebody who want to do the same doesnot land into trouble like me.
The dangerous way of getting max out of your computer is changing the FSB frequency.FSB is the frontal side bus which connects CPU with the system memory.Changing FSB means you are changing not only the system memory access speed but also the processor clock, the PCI frequency and many other IO device's operating frequency including the chipset (your motherboard's heart,AGP etc) .
So you need to be extra careful.
If you want to :-
1. Read the motherboard manual to see if overclocking the FSB or for that matter even CPU overclocking is supported. Do not trust your BIOS like i did. Good BIOS vendors lock the FSB freq option to avoid any not so pleasant scenes. Unfortuantely Chinese manufacturers are either brain dead or don't know how a software should work, no matter how small it is.
2. Best to test is download software utilities which can check and tell you if you can do it ,and if you can what is the best range.
3. Sometimes overclocking comes with the price of over heating.Be prepared to face this.
4. Check if your perihperals can work with freq increased to orig freq + half the margin by which FSB freq is increased. Important ones are IDE HDDs, AGP cards and RAM modules.
5. Stick your both palms and pray.
6. If you are luck enough, welcome to the elite club.
7. If you are not welcome to the elitest club, because now you know what to do and what not to do , rather than just what to do. :)