This is the case with several plug ins, and I just hope I am installing them correctly in the directory. I am unzipping, then by ftp loading the FOLDER containing the documents into the content/plug-ins directory. Hardly any plug in show up in the Adm Plug In panel.
I am using WP 2.3.1 and a non-default but WP approved template. I am also not educated in any programming, save minor HTML. Thank you.