It's almost certainly too late to do so this year. I'm only prompted to mention this topic by the appearance of an item from The Guardian newspaper: The world's top 100 universities 2013 - the full list.
Five universities from Canada appear, with the rankings indicated:
17 University of Toronto
21 McGill University
49 University of British Columbia
92 Université de Montréal
96 University of Alberta
The top rankings went to MIT, Harvard and Cambridge.