haidcar wroteor use a shipping courier. Aramex, DHL, Fedex... you can take the pc to any of their offices and and they will weigh it and give you a price quote.
I second this--it is their job to ship things and they should be able to it in the most efficient manner. If you were going to the US, I would have told to sell the rig and build another one as parts in the US are much less expensive than in Canada.