There is a easy way to download the latest and correct video card driver.
Click the link to download the tool.
Or download it from here. Release on 7/17/2011.
It will run on most of Windows OS. It detect the OS version and your ATI card.
Then it will find the latest driver for you.
Download it and install the video card driver and control panel.
It is Official tool from AMD. Not third part tool. So it is safe.