Intergrate WP-Ecommerce with Cimy Extra User Fields...

Hi, I have a website running Wordpress and WP-Ecommerce, and Cimy Extra User Fields. When someone registers it creates a user account, however i need it so that the shopping system uses the user data from the extra fields... so - Place an order and the system uses the register user fields, and doesnt ask them to fill out a form... I also need them to be able to edit the fields so that the user can change his address / email address password etc... This is a link to the site... [login to view URL]