Hate to disagree with you, Charlie, but are you sure you're running a Macintosh operating system.

I have just tested with Photoshop Version 5.5 (under OS9.2), Version 6.03 (under OS9.2), and Photoshop CS (under OSX.3). All three versions successfully loaded and used brushes with filenames of angels3.jbr, btfly5.jbr, and bows4.jbr.

Actually, I was surprised that Photoshop CS would recognize them, because OS X uses the extensions as identifiers.

For operating systems 9.x and below, the file type for all of the above was 8BBR and the creator was 8BIM (yes, they are case-sensitive).

Looking a little deeper into the OS X examples, I find that the Unix settings for files with a *.jbr extension indicate that the default application for such items is Adobe Photoshop CS. So this must have been set when I installed.

Still more research: in OS 9 (Photoshop 5.5 and 6.x), I can open and use files with no extension whatsoever, as in "50 More from Xaos" (without the quotes, of course). However, the type/creator pair is 8BBR and 8BIM.

BTW, the angels, butterfly, and bows brushes were, in fact, imported from a Windows source. I had to change the type/creator pair manually (actually, I wrote an AppleScript to do it; I get bored easily).