Heya! Hey i have the same motherboard as you! yay!
Well personaly I'd do itin the BIOS and just increase the FSB. I can overclock my pentium D from 2.8GHz to 3.3GHz by just a few presses of a key. yup. However remember that overclocking means more power, so that's why I'm waiting till I get a 750W PSU with a 8 pin connector to replace my 4 pin CPU connector from my 650W PSU.
I know I just waffled on there but I hope that helps out in some small way.