THIS IS not true
Your work is automatically copyrighted, unless it is pirated from someone else
http://www.justia.com/intellectual-property/copyright/
From here:
http://en.wikipedia.org/wiki/Copyright_law_of_the_United_States
"While copyright in the United States automatically attaches upon the creation of an original work of authorship, registration with the Copyright Office puts a copyright holder in a better position if litigation arises over the copyright"
Of course the above is US law in Canada? A quick Google shows about the same law applies