Okay, yeah, at least as far as I know you have the latest version. Some of the links I give you may not be compatible with v10; just have to give it a try. Just an fyi, in case you don't know it, if you get something you take a liking to and it is in Psp, just convert it. You can convert it to psd by changing extension, then if I remember accurately you can convert to Painter.
Lots of links below, if you don't see them come thru right, just give me a PM and I'll list the URL's.
Have fun!
DMN Forum - View Article
About.com: http://www.pixelalley.com/Painter7/painter6and7_brushes.html
About.com: http://www.pixelalley.com/Painter7/painter7-water-color-brushes.html
Painter Creativity - Painter For The Creative Soul
Sandman's Brushes Page 1
DigArts Software - Paint and Texture Tools for Art Professionals
Cher Threinen-Pendarvis Website
super book, read it if you can.
DP&I.com: Digital Painting by Bobbi Doyle-Maher
Digital Painting and layering with Bobbi doyle-Maher, this lady is a true master.
Last but not least David Gell, don't have his URL, but shouldn't be hard to locate.
As far as actual brushes, papers, textures, etc. I have so many I had to make an entirely new directory to hold it all. Many of them I have no idea where I got them. Be happy to share, but can't post them here, ya understand? Don't have permission.