Our copyright application and payment for the work Windows to the Past were submitted to the Patent Office on 10/23/2011. The application is pending one more the final submission step that Grace Shahrokh is completing. The effective date of registration is established when the application, payment AND the material being registered have been received.
Only certain categories of works are eligible to be registered with digital copies. (See FAQs: http://www.copyright.gov/eco/faq.html#eCO_1.4 and http://www.copyright.gov/eco/help-file-types.html).
To learn more about this process, you may contact the Copyright Information Section at 1-877-476-0778 (toll free) or 202-707-5959. You may also email us at firstname.lastname@example.org. They are available Monday through Friday, 8:30am to 5:00pm EST.