automatic time-stamp

[Jeffrey L. Greer]

I am trying to configure automatic time-stamp for emacs 21 in a Debian
Sarge system. I have the following .emacs file in my home directory. I
have read and re-read what seems to be the relevant pages in the hard
copy of Gnu Emacs Manual. Time stamp will only work manually.

Suggestions please? Thank you, Jeff Greer

(custom-set-variables
  ;; custom-set-variables was added by Custom -- don't edit or cut/paste it!
  ;; Your init file should contain only one such instance.
 '(add-hook (quote write-file-hooks) t)
 '(case-fold-search t)
 '(column-number-mode t)
 '(current-language-environment "English")
 '(global-font-lock-mode t nil (font-lock))
 '(time-stamp-active t))