In Apache (default setup) there is a directory under /Apache called /htdocs. This is the web root, normally. So anything under that would be "public html directory".
So unpack PEQEditor.rar into /apache/htdocs/peqeditor, and edit the config files from there. then you can browse to
http://apache_server_URL/peqeditor and the editor will pop up.
Example:
http://todeq.no-ip.org:8999/peqeditor