NOTE: This has been done and tested in Photoshop CS4 installed on Windows Vista Business
Download your new set of brushes and copy the abr file eg. brushes.abr to the following directory “c:\Users\YOURNAME\AppData\Roaming\Adobe\Adobe Photoshop CS4\Presets\Brushes". NOTE: This path may differ in different versions of Windows
Open Photoshop CS4
Press the F5 key on your keyboard
The brushes window will now open
At the top right hand corner press on the little down arrow
In the dropdown list click on **Load Brushes
**
Select brushes.abr and click on LOAD and your new set of brushes will be loaded and ready to be used