I have managed to make openerp (in this case localhost:8069) skip Database selection (Not show the database selection form for the users) by adding the needed database parameter in the openerp service file in /etc/init.d. What I need right now is to skip the following page which is the user/password form. I do not want users to arrive directly to this login/password but instead land in the website.
The website addon is already installed.