Somebody mentioned job banks?
http://www.canadavisa.com/career_zone/canadian-immigration-job-search.htm
http://www.jobbank.gc.ca/
http://www.eluta.ca/
http://www.monster.ca/
http://www.workopolis.com/
From what I've heard, it's extremely hard to get jobs from abroad. Try if you can to get a personal contact with the employer. Call them or something, talk to a person, ask if you can send your resume. Then maybe they will not throw it in the garbage right away. Thing is, there are a lot of unemployed people in Canada right now and employers don't appreciate the extra hassle of hiring a foreigner if they don't have to. So either you have some special skills that they need or you can talk them into believing that you do.
