That motherboard is terrible for overclocking, I'd give it a 1/10.
Besides the fact that you'll probably damage something, you can go into the bios and start overclocking.
For AMD it's either multiplier or CPU Bus, I think CPU Bus is a better way, but beware, because CPU Bus brings your RAM speed up so you might need to tweak with it a little.
I'd start with as little as a 10Mhz increase on the BUS speed.
After that boot up your pc start a Prime95 test for 30mins or so and watch the temperatures, if they are good and it doesn't crash, then you can go higher.