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Do you see the message with the yellow background "This post has NOT been accepted by the mailing list yet"? Please read http://itextpdf.com/nabble and you'll discover that Nabble isn't the official channel to ask questions. Read http://itextpdf.com/support to find out how to post a question.
I've seen your question, and it's clearly not an iTextSharp question. I am not a C# developer, so I can't help you, but I know enough to tell you that you are experiencing a configuration problem that any C# developer should be able to solve.
Also: did your employer (or the company that gave you your assignment) purchase a commercial license for using iTextSharp?