[Plugin: Facebook Like Box Widget] just show link to page on facebook, not content of page

Does anybody know how to eliminate the automatic posting of the content on the facebook page, I just want to show the link. OR, I want to be able to control what gets posted on the facebook wall of a user that likes the page. Can somebody help me figure out how to do this?

http://wordpress.org/extend/plugins/facebook-like-box-widget/