PSP Users;
Don't fear older PhotoShop brushes, .abr format.
In PSP select File>Import>Custom Brush>
click to open and go find the .abr file.
Double click on it. It will load on the left.
Select Add all if there is more then one brush
or click on only the desired brush(es) then Add.
Click ok, your brush Cache will be refreshed.
you can now look through your brush list
for the new one(s).
Do the same process to bring older psp brushes
into newer versions of PSP.
Please Note that newer photoshop brushes may
not be compatible with versions of Paint Shop Pro.
This is because the brush creator did not save
the brush to be compatible with other versions
of photoshop.