Hmm, well as it has been said, recruitment is generally the same as in the USA. Excluding the schools that have lots of greek groups (UT, UBC, UWO, etc), most tend to have only a handful. The canadiangreek website linked above is a good source.
Having gone through recruitment at a Canadian school, I can tell you that it is indeed less competitive. Not a lot of people realize that there are, in fact, greek groups in the great white north. Remember though that each school is different.
A little side note on your situation of not knowing anyone: don't worry about it too much. I was in the same boat. Usually you can find out more information by going to clubs days and finding the 'greek' booth. For example, at my school our greek system falls under FSA (Fraternity & Sorority Affairs), so if one was to come to clubs days, they would look for the FSA booth for all their greek life questions and information
Best of luck!!