Canadian drop shipping

WorldWide Brands and a few others come up most frequently. Ideally I would like to find a drop shipper of wholesale computers and parts, in Canada and maybe even one with a real time product web service to avoid having to fill out orders manually.

Can anyone suggest, link to, comment on the hundreds of drop shippers out there?

How do most of them work? You pay a one time fee for a directory to a drop shipper, at which point you contact the ones you want, apply for seller status, setup a store front and begin taking orders and filling those orders at days end via a web panel provided by drop shipper???