How to install Organic Galleries Module!!

I am trying to install organic gallery for my new drupal based community site. I went through the readme provided with the organic gallery module. There it says you must have Organic Groups, Views, and Taxonomy i.e. Organic gallery is dependent upon these modules. I installed successfully Organic grups and views but in taxonomy which particular module to choose. Under taxonomy there are lot of components i was not able to find a single component named taxonomy, please suggest which module under taxonomy to install to have organic galleries installed. Any help would be appreciated. Thanx and waiting for your earlier reply. Thanx in advance :)