How to change the name of the window

[Saïd]

 Hi,

 I have several emacs runing, I would like to change the name of the
different windows so I can find them fast (instead emacs@host, somthing like
"main_program" or "The Library stuff" would be helpful).

 Thank you for your help.


-- 
Saïd.
 "Bless this, O Lord, that with it thou mayst blow thine enemies to tiny
bits, in thy mercy."
  In the Book of Armaments, Chapter 4. (The Holy Hand Grenade)