The preview, is just a thumbnail view of the brushes, and is not the actual size(s) of them.
To download the Paint Shop Pro brushes, click the "download" button, or if you want to, download them from RapidShare: [link]
I have also saved these as .abr for you Photoshop users, download them by clicking: HERE
The PSP pack is bigger than the PS pack, this is because it has the PNG's in.
Enjoy and dont forget to fave or at least comment