Help with Glass Mat

OK, so I recently discovered Indigo, and love how it does glass, and just today I am trying to render a logo, with the letters glass, and the background a rusted metal. I did not know that Indigo wouldn’t render the the image texture I put on the background. So since Indigo wont work, I now have to try and make the glass mat work for Yafray/Blender, but I can’t. I have no idea how to make a glass mat, can someone please help me?