Automatic Facebook Wall Posts

We allow users to create and download custom images. Before they are able to access the download link page we want them to share our site on Facebook. The solution should require users to log into Facebook and to give us permission to automatically post on their wall. Every time a user goes to download an image a default message should be posted on his or her Facebook wall. For example: [user name] has created a custom image on oursite. (custom image and our site should be linked back to our site and should show a thumbnail of that custom image) Here's a link that describes what we are looking for: [login to view URL]