I’m sorry for my delay in replying! I had to put this project aside briefly but now I’m back at it. I really appreciate your response – but, unfortunately, I don’t have that file or an extras folder.
The theme author told me that it is in the bbpress folder, so I went to wp-content/plugins/bbpress and there are some files in there (bbpress.php, index.php) that may be the place to do it. I’m going to keep trying!
Thanks again 