Following this tutorial here:
And it says,
UPDATE: If you are unsure, please download GPU Caps Viewer (I recommend the portable version) to determine if you have a compatible video device and a working version of OpenCL installed. If you are using an AMD/ATI card you likely need to install the ATI APP SDK (make sure you obtain the correct version for 32/64-bit Windows).
I've downloaded the SDK and installed it, but it's just sitting on my hd, doing nothing at all. I seem to be mining bit coins ok. Soft of confused as to what's going on? Thanks