How to install the server version of rpad

Hi,

How can I install the server version of rpad on a website. I have read
the instructions in http://www.rpad.org/Rpad/ServerNotes.html, but
could not figure out how. Do I have to have something like Apache on
the website? Is there any instructions in addition to those on
http://www.rpad.org/Rpad/.

Thanks,
- Reza