Add file sharing capability to existing script

On this website: [login to view URL] I need this script modified: It's a tool for students to interact with the community. We also want them to be able to add and share files: .txt, .doc, .HTML and .PDF (the major files extensions...) You will add 1 item to the top navigation bar and you will call it: **MyThesis** The owner of the document must be able to restrict access if needed. When uploading the file, the owner must be able to type a title + description + keyword tags That's all. A $25 bonus will be issued if work is done to my satisfaction...