• You should create a branch for your module installation with bzr command,
• Add that module folder to the openerp module search path.
• Restart the openerp server.
• Make installation from web interface.

With this method you can update modules and openerp addons separately without any problem.

Here is an example module installation for you below.

Create a new folder and download aeroo modules from launchpad to this folder with bzr.

sudo su openerp
cd /opt/openerp/
bzr branch lp:aeroo
exit

Add aeroo directory to the module search path of openerp by editing the config file

sudo nano /etc/openerp-server.conf

change the addons_path as

addons_path = /opt/openerp/addons,/opt/openerp/web/addons,/opt/openerp/aeroo

I also recorded installation from openerp interface you can watch it in Youtube. (since interface is different than 6.1 you may not find where to install at first sight) http://youtu.be/S1bKPUL6nUU

PS: I used a previous answer of mine for this post: https://accounts.openerp.com/forum/Help-1/question/2780/