I ship to Canada or at least my drop shippers do. My shopping cart does the currency conversion for me and I have my shipping settings set to charge more for Canadian shipping. I also tell my customers that shipping might take 2 to 3 weeks depending on customs. Sometimes it only takes 5 to 7 days as opposed to 3 to 5 days for US delivery.

You should have no problems setting this up for yourself. Contact Canadian post and they will give you more direction.