Better yet, try
www.caaviation.com
500 hrs won't get you much work, perhaps up north in BC in the onshore Oil and gas fields.
I'm not exactly who "approves" mountain courses, but you'd be looking at a minimum of 20-25 hours at a reputable school. ie BC Helicopters, Chinook, Valley, VIH (or whatever they call themselves now), CHC, etc, etc