Canada doesn't let people move up north for the same reason other nations have "cruel and unusual punishment" laws. =)
More seriously,
http://www.cic.gc.ca/english/skilled/
is the "skilled worker" assessment website, and
http://www.cic.gc.ca/english/skilled/assess/index.html
is a self-assessment tool. Wow, the pass mark is down to a 67: last I checked it was a 75. Looks like you can get in easier than I thought. =) (they probably change the pass mark regularly to keep a regular stream of skilled workers immigrating)