Hello, I have files of module but I cannot install it in openerp as it does not show up. The steps I have taken are as follows:

1) Copy the folder "modules-openerp" inside /opt. The folder can be downloaded here (please unzip it): https://www.dropbox.com/s/2tivo9k21tadnl2/modules-openerp.zip

2)sudo nano /etc/openerp-server.conf

3)add the sentece  "addons_path = /opt/modules-openerp" at the end of the file

4)/etc/init.d/openerp-server force-reload

5)Open Firefox: http://localhost:8089

6)Login

7)Settings-->Installed Modules-->Remove the filter "installed" at the top right hand corner

Are the steps above correct? Anythings missing? Thanks.