|its very simple really,|
but i dont c a need to overclock the card u have, its pretty good on stock clocks.
to overclock u need ati overdrive in ur catalyst control center, if u dont have it, download ati tools(google)
amd cards dont have shaders clock its on the core clock.
u have to raise each clock by 5-10MHz, and stress test ur graphics card for core stability(ati tools has a built in stress tester) keep raising the clocks by 5-10MHz when u stress test and start seeing snow dots(artifacts) reduce the clocks by 5-10MHz to maintain safe range.
computers are a second home