There are two ways you can edit your homepage files. The first, easiest way is to telnet to Ares and edit your files directly on the Ares machine.
Some folks prefer one, some prefer the other, but both get the job done.
Pico is the editor used in the Pine mail program. This page describes lots of hints about how to use both of these programs. After a little practice, you can edit your homepage files very quickly using Pico or Emacs. I have a page which details how to transfer your files to Ares. You start up pico by typing pico filename at your prompt, where filename is the name of the file you want to create or edit.