Topic: Amazon Showcase 2.1, September 2009
Activate the Amazon Showcase Plugin at Dashboard-->Plugins.
Visit Dashboard-->Settings-->Amazon Showcase and save setting to initialize.
Add a new showcase and add new items from amazon.ca ONLY.
Don't forget to change the name of your showcase from "New Showcase" to something appropriate.
After you saved a showcase, 1 or a bunch, vist your Dashboard-->Widgets page to activate you newly named widgets.