-
Install:
place the files into C:\Users\[USERNAME]\.gimp-2.6\brushes [or change into the version folder that you are using]

If you're running gimp at the time you install you'll have to right click on the brushes panel and press "refresh brushes" for them to show up.

As with all of my brushes:
* Attribution not required except for published modifications
* You may use these for commercial purposes

Good luck painting :)