Importing Brush's in PSP9
After you download your brush you have to 'unzip' it. I use a program called WINZIP; you can download a free trial!
Now you have an unzipped brush, or file of brushes, so now open PSP9 and go to File --> Import --> Custom Brush like THIS
Once you click that a new little window should open and then you just click 'Open' then find your brush... 'Add All' then 'OK' like THIS!
If they arent in your brushes drop down, then you might have downloaded a brush for lower version of PSP!