Download the plugin archive and expand it (you've likely already done this).
Put the 'twitter-tools-og-hook' directory into your wp-content/plugins/ directory.
Go to the Plugins page in your WordPress Administration area and click 'Activate' for Twitter Tools - Open Graph Hook
Follow the instructions here to turn your page into Facebook open graph objects. Make sure you associate your page with a Facebook application using the "fb:app_id" meta tag.
Obtain the page url, facebook app ID and facebook app secret of your page. Go to the Twitter Tools Options page (Settings > Twitter Tools) to set up your Twitter Tools Open Graph Hook by filling those information.
Requires: 2.9 or higher Compatible up to: 3.0.5 Last Updated: 2011-10-17 Downloads: 372