If it is a direct bank transfer, you can't. It will always be to the local currency of the country, in your case, CAD. If you wish it to be in USD, you have to use Paypal. Just take note that Paypal their own service fee.
That's what confuses me David. It is a direct Bank transfer. And it is collected in US dollars. And I would like it transferred into a US dollar account, in a Canadian Bank. What am I missing?