Newb, How do I add dled brushes to my project?

I for the life of me cannot find the proper way to move my gizmo brush pack into my projects assets. I just want to play around with some different brushes making some terrain. I could not find the answer online. Cany anyone help me here? I know it's a rediculously simple question but I'd be very greatful to anyone who can end this frustration for me. I'm using windows 7 with the free version of Unity4. Take care, have fun