PSP7 question, regarding sorting of brushes/.jbr files

I have over 1500 brushes in my brush folder. *sigh* So many that I can never find the brush I want when I need it. I would love to be able to sort my brushes into category folders such as 'text', 'border', etc, but since they are in .jbr file format, I don't know if that is possible. Do any of you know what I could do, short of stamping each and every brush into a new 100x100 canvas and saving as a .jpg or .png? I'm honestly close to just deleting all of my .jbr files and starting fresh with image packs only and simply making brushes as I need them, then deleting them again as soon as I'm done.

Any and all help is greatly appreciated!