Web Properties / Page / HTML Code HEAD:

<meta property="og:url" content="http://www.your-domian.com/og" />
<meta property="og:type" content="article" />
<meta property="og:title" content="This is just a test of Open Graph Markup" />
<meta property="og:description" content="Designed by Egg-static?" />
<meta property="og:image" content="http://www.your-domian.com/og/index_htm_files/og.png" />
<meta property= "og:image:height" content="200" />
<meta property= "og:image:width" content="200" />

should do this Paul