Athlon 1.2 GHz Overclocking: Where to start?

[Wing627]

I'm new to the whole overclocking scene, but I've decided to give it a shot. I've read several articles on it and understand the process, but I still have a few questions.

I have a 1.2 GHz tbird on an Abit KT7A-RAID and the CPU is unlocked. Where do I start to overclock it? Do I just start incrementing the FSB speed and making sure it boots each time?

Also, Should I worry about increasing the voltage?

Thanks for any help!