For all the information you need about copyright in the US
point your Web browser to:
http://www.loc.gov/copyright/copy1.html
This is the The Library of Congress' United States Copyright Office
page. It describes copyright law as it applies in the US and abroad.
You can download forms and instructions, they are in the Acrobat
Reader format, so you will need the reader.
Good shooting, Jack Yau (jyau@popmail.mcs.net)