Adobe Photoshop rite?
-Open Photoshop.
-Click the Brush Tool (or press B).
-Click the drop down arrow on the top.
-From there, click the arrow on the right ( ->).
-Then click Load Brushes (add the new brushes to your current brush list) or Replace Brushes (replace your current brush list with the new one you select).
-Browse thru the folder where your brush is at. Make sure format is .abr