heres a list a quit a few websites to get brushes, and some are really good http://www.sigfix.com/modules.php?name=Web...=viewlink&cid=7 and this one is great, a gallery of TONS of brushes http://www.sigfix.com/modules.php?name=Web...op=visit&lid=86
deviant art (browse for brushes) is usually good, especially since there are so many grunge brushes available to be downloaded there.
one section of the forums have brushes stickied to the top so just check around.thats how i found mine or google