Answer:
ClearType is a technology used in Windows XP and Vista which smooths screen fonts to make them appear better on flat-screen monitors.

1. Push Start , then Control Panel, then Personalisation.

2. Click the Windows Color and Appearance link

3. Click the link for "Open classic appearance properties".

4. Press the Effects button, then tick the box to enable ClearType, or untick the box to disable it. Make sure you select ClearType from the drop down menu option.

5. Click OK, OK then close the Personalisation window.