So I was at my local Borders that is closing on Sunday and they were selling everything, from desks, to the light fixtures for their track lighting. They had 4 light fixtures for track lighting, and I don't know how to mount them. I attached a picture of them. What kind of transformer should I use for the track, and what kind of track should I use? My goal is to attach the track to the wall right above my desk, or attach it directly onto my desk. I have an attached shelf on my desk so it will go on the top shelf. Any help and information would be appreciated!