You dont need to register a copyright, copyright is automatic on a peice of creative media if there is a plain notice of copyright and the date.
Who Can Claim Copyright?
Copyright protection subsists from the time the work is created in fixed form. The copyright in the work of authorship immediately becomes the property of the author who created the work. Only the author or those deriving their rights through the author can rightfully claim copyright.
taken from here:
http://www.copyright.gov/circs/circ1.html#wci
Who Can Claim Copyright?
Copyright protection subsists from the time the work is created in fixed form. The copyright in the work of authorship immediately becomes the property of the author who created the work. Only the author or those deriving their rights through the author can rightfully claim copyright.
taken from here:
http://www.copyright.gov/circs/circ1.html#wci