info path in shell vs info path in emacs

[Chris]

In my shell environment, infopath is set to: /home/me/info (my own
info files) /usr/share/info (where all the Emacs info is put) and
 /usr/share/gcc-data/i686-pc-linux-gnu/3.2/info where all the system
info files are. This is good when I am in the shell.

But when I am in emacs, I would like to only see my info and the emacs
info files... not all the system info. However, emacs still picks up
the system files even with this in my .emacs:

(setq Info-directory-list
   '("/usr/share/info"
     "/home/chris/elisp/info"))

How can I tell emacs to drop that system path?