export & import via control panel admin.php

I would like change shopping carts & theme on my Wordpress theme. I need to export the table in my [login to view URL] onto csv in order to import it again after. I am unable to find the files that contain the product & images. I would like to find someone who has a lot of experience with exporting, importing, csv or xml, wordpress & control panels. I would like the products data & there images exported from the site & then imported again using the WP ecommerce product importer that is installed in the site. The images must be exported & imported together with the products data too. There are many other similar jobs after that.