I presume you mean for photoshop?
My one and only brush resource is deviantart.com!
Clicking here will bring you directly to the photoshop brush section. Just perform a simple search from "Search these Results" and you'll find exactly what you're looking for!
Bare in mind that not all of these brushes will work with every version of photoshop. Usually some of the newer brush sets wont work with earlier versions like 7.0, but if youre using CS2 or CS3 or something you shouldn't have any trouble at all!