I haven't use photoshop in quite a long time..but.. back in the day when Photoshop came out on DVDs.. there were extra assets on the DVD that were not automaticlly added into the prograam. So you'd put your DVD and get those extra assets off the DVD.. like extra brushes.. expically since the ones inclued in the basic program are pretty skimpy selection.
Is there a place on the Adobe website to grab those brushes?