Hey Rgivens... here's a link to a couple of good articles about copyrighting songs.
http://www.copyrightauthority.com/song-copyright.htm
http://www.templetons.com/brad/copymyths.html
http://www.songwritersresourcenetwork.c … ights.html
Ironically, the minute you finishing writing down a song or lyrics, you automatically own the copyright to the material. But that doesn't do you any good if you actually have to prove you own the rights, which is why you must register it.
Another tip I heard was play it to people, preferably a LOT of people!
Hope this info helps a bit...