shameless bump, but it is important. summarizing what I have to do in order to overclock my card is:
downgrade to 169.04
install ATITool (don't know if there is a better one)
overclock 10mhz, double the shader
run 3dmark06 16 times (I wonder if there are other tools)
then I'm done? but what do I have to overclock, 2d or 3d settings? and what if I want to upgrade the core speed?