If you’ve used Cart66 before then I’m sure you realize it’s pretty lacking in features. In fact to really get a store going you have to do a lot of manual intervention and hacking. It just doesn’t seem very clean. The idea that you have to make a post or page your self for every product seems very kludge and has been a bit cumbersome for most users. That is why I wrote this plugin cart66_migrate to Migrate Cart66 to WP-e-Commerce.
The plugin utilizes the ecommerce_feeder plugin to import the items to your WP-e-Commerce store.