Hi, I'm not sure we've any Canadians registered but would imagine the system would be the same anywhere, you'd need to contact hospitals/clinics that offer IVF/fertility treatment and they'd be able to tell you if they run a donor programme. Alternatively, if there's a Canadian fertility council or similar, their website might have links that would help.
My best friend was in your situation, she was in England though. She contacted a large hospital that she knew had a fertility clinic and successfully donated 19 eggs. She knows that 2 of them went on to become baby girls for other couples.
What you're thinking of doing isn't easy but should give you a glow for the rest of your life