http://support.amd.com/us/gpudownload/windows/Legacy/Pages/legacy-radeonaiw-vista64.aspx?type=2.4.1&product=2.4.1.3.36;2.4.1.3.37;2.4.1.3.39;2.4.1.3.38;2.4.1.3.40&lang=us&rev=12.6&ostype=Windows%207%20-%2064-Bit%20Edition