I've downloaded the Orial font (Windows 7) but it's not showing up in Photo Filtre. I've downloaded fonts before and not had this problem. I tried uninstalling and reinstalling.

Use the file orial.ttf. (not orial_bold.otf)

Oh, okay, thanks! I found it on a different site and downloaded it already.

.OTF that do not work with Photofiltre, but the file .otf works with the studio version.