Re: Immigrate to Canada: Do I need an agency?
Don't even worry about the points system - it's pretty much a non-starter. You can apply on a temporary Work Permit initially (once you have a job offer) which can be converted via the Provincial Nominee program once you've worked 3 months. That's the quickest route. Otherwise you can apply for PR through the skilled worker program but that takes a while. Check out the link from SD.
As has already been said, you must get the OK from Ontario that you are qualified to sit CRNE &/or jump through whatever hoops they require for that. Then you're in a good position to contact hospital HR/recruitment departments direct.
You
DO NOT need an agency.
One problem you may have is that some Provinces/hospitals are cutting back on IEN recruiting while the economic situation is like it is.
Nursing News