Very simple steps to install.
Sometimes the button to connect is hided when collapsing the menus but this minor problem was solved by adding some text in the "post-text" field while configuring the module.
Maybe it could have an option to open search results in another windows (always replaces site window, but it´s fine because the links of search results push the site back!).
Another great addition would be to present the search results in the body area of joomla site, keeping untouched the menus, other modules and ads.
If you want a search with the power of Google in your site, this is your choice.