How I can install [gnochm] in Ubuntu?

sorry for my rough english .
recently becomed Ubuntu's user.
I think ubuntu very simple and kind for beginner.

But there is some problem.
As you know , there is a chm file format viewer for gnome environment.
I've read README.and I fill requirement . but , i can't found some package.
next is error message.
============================================
You do not have all of the required Python modules to run gnochm.
Check the gnochm README file for tips on how to fix this.
What follows is the error description highlighting the problematic module.

No module named chm
============================================

next is README file .
=============================================
REQUIREMENTS

- PyCHM (or python-chm) (>= 0.8.2)
- Python (>= 2.2.1)
Also, python must have gettext and locale modules
- pygtk2 (>= 1.99.12)
- pygtk2-libglade (>= 1.99.12)
- gnome-python2 (>= 1.99.11)
- gnome-python2-gtkhtml2 (>= 1.99.11)
- gnome-python2-gconf (>= 1.99.11)
- gnome-python2-bonobo (>= 1.99.11)

- Optional shared-mime-info from www.freedesktop.org
==============================================

if you can ,please teach me each modules's project homepage or URL.

Thanks you for your appreation.