How to list, add, edit, save file on a remote server

[Thorsten Jolitz]

Hi List, 

a very general question, with the hope to get some general advice what
route to take: 

Suppose you are registered on a foreign server with the right to add and
edit files, and there is no Emacs running on that server. There exists
an Emacs mode for the type of files on the server, and you want to
access the server, list all files, select a file for editing, save
edits, or even add a new file - all from within Emacs, without ever
touching the webinterface. 

How would you do that?
Via FTP? With Tramp? Would it be possible to run dired on the foreign
server? 

I would need some hints where to start my own investigations. 
TIA

-- 
cheers,
Thorsten