Don't ever OC a CPU if it is sitting on a cheap mobo. you'll be runing the CPU and as well as fry the mobo very soon,
If you need it so badly in the mobo try increasing the FSB in uncrimental value but don't put ti too high mabye 5 or 6 Mgz initially will do the job for you. Please pay good attention to the heat dispatch. So many guys/gals forget the fundamental theroy of this, so remember to have better airflow. Plugging lot of fans into the machine won't that work peroperly. Try visiting
www.overclockers.com for more information.
Cheers