How can i have a job offer letter from a canadian company?

I read all the deatils about how to get a work permit from canada they say i must have a job offer letter from a canadian employer or a arranged job. how can i contact a canadian employer to do it? i have nobody in canada. so it%26#039;s so hard to contact an employer in canada to do it.please help me to have a job offer letter from there.|||Get contacts via the internet, then go to Canada to meet them and have interviews... maybe you will get a job offer... if there%26#039;s a will, there%26#039;s a way.|||The Net is world wide. You can probably do a search for jobs in Canada, and apply online.