I have described the steps in this item in more detail in
the OS-specific items below, this item provides an overview
of the process.

1.   Unpack your distribution
2.   Copy the distribution to the location on your web
  server where it will be installed, “/public_html/mailman/”
  for example.  Make sure that the following files are
  present:
  “mailman.cgi” or “mailman.pl” (it comes under different
  names), “cgi-lib.pl”, all of the “i_*.gif” files, and all of
  the “t_*.htm” files.
3.   Make sure that your copy of “mailman.cgi” or
  “mailman.pl” is executable, and is executable by your web
  server.  If you don’t know how to do this, consult an expert
  on your operating system and web server.

That’s it, it looks too simple to believe, but that is the
basic process.  In most cases it will be that simple, and
MailMan will run ‘out of the box’.  Once you have performed
the above three steps, merely access the application through
the URL that you have given it.  In the above example, the
URL to access MailMan would likely be
<URL:http://yourserver/mailman/mailman.cgi> or
<URL:http://yourserver/mailman/mailman.pl>