This is strange. I know I responded to this but it seems to have disappeared. So here it is again.
PBV seems to be a very old file type that does include all the commands to be read as a preset, but in a format that the newer PSP (even version 8) does not use. With a little bit of work, you can “convert” them to a usable format. Here are the steps I did and it works.
open the pbv file in Notepad. You will see all the settings listed
open a blank image and doodle something (just so you have something to add a bevel to)
following the settings in the pbv file, adjust all the settings of the bevel to those
save those settings as a preset (you can use the same name if you want since it will be a different extension anyways)
Now, you have the preset to use in your current PSP version.