DVI Scaling for ATI Radeon under Windows 7 x64

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I just upgraded my parent's media centre machine to Windows 7, however, the image through the DVI/HDMI cable was underscanned (text was blurry, and the image had black borders around it).

Normally, in the Radeon Catalyst drivers, you would go to the Desktop & Displays, then right click the display at the bottom of the screen (not the big one in the middle!) and select "Configure".

Unfortunately, in the latest Catalyst 9.9 drivers, which you select "Configure", it takes you back to the home page of the control centre. Downgrading to Catalyst 9.8 resolved this problem.