Copyrights
Copyright Office Hotline used to be at (202)707-9100. At the very least you
will want Circular 1 on copyright basics, possibly Circular 45 on
registration for motion pictures and video recordings. As I recall, those
folks are very helpful. Specific to your question: as soon as the work is
created it is considered copyrighted, however the c in a circle with the
year of publication and the copyright owner's name is highly recommended to
prevent claims of innocent infringement. Registering the work is not
necessary but again is recommended especially if court seems a possibility
as additional damages and attorneys fees can be awarded if the registration
is of public record. As to using anothers work, well, without their
permission it can be contrued as copyright infringement unless it falls
under what would be considered 'fair use'. Briefly, my understanding of
fair use is that if the use does not compete, damage, or prevent the use of
the original in its intended or similar market, you MAY be okay. If your
not sure I would suggest you ask (a copyright attorney can be very useful
too). Considering the ethics/moral issues involved (not to mention the ole
golden rule) what would you like done were it your work? Hope this helps, I
think what I've said here is accurate, if not I'm sure someone will jump in
here and clear things up.
JDH