I tried to install bitcoin mining on my setup using this walkthrough http://www.newslobster.com/random/how-to-get-started-using-your-gpu-to-mine-for-bitcoins-on-windows
I downloaded the Bitcoin and downloaded all the blocks, then I wanted to start mining but I can only select my CPU on the GUIMiner..
I installed the latest Drivers and ATI APP SDK.
I've got an AMD Radeon HD 6950 Series card..
Also even when i tried solo mining on my CPU it gave me errors ''Problems communicating with bitcoin RPC 0 2'' etc..
Any help is much appreciated!