If you are using Windows XP and are on a netbook or using a laptop with a small screen, text might seem difficult to read. The fix for this is to download ClearType Tuner from Microsoft’s XP PowerToys website. This is Microsoft’s own tool for using ClearType text on Windows XP. ClearType is a technology that makes text easier to read by using special antialiasing methods on text (just how video games use it to fix jagged edges.
Below are two screenshots of how ClearType works on the Acer Aspire One netbook.
The difference this makes on an 11.6″ 1366×768 display is huge. And I also recommend to set the slider to the darkest option, otherwise the text looks a bit blue: