After some searching, I found the answer on the Instinct website!
This list is a little dated, but it should give you an outline for what you're looking for. It worked great for me. Just make sure to back up your database, as well as take care not to remove any necessary wordpress tables. Redundant, I know. But that's how I roll.
http://www.instinct.co.nz/forums/topic.php?id=2431
Just for fun, I'll copy and paste the post from Shayne below:
wp_also_bought_product
wp_cart_contents
wp_cart_item_extras
wp_cart_item_variations
wp_collect_data_forms
wp_currency_list
wp_download_status
wp_extras_values
wp_extras_values_associations
wp_item_category_associations
wp_product_brands
wp_product_categories
wp_product_extra
wp_product_files
wp_product_images
wp_product_list
wp_product_order
wp_product_rating
wp_product_variations
wp_purchase_logs
wp_purchase_statuses
wp_region_tax
wp_submited_form_data
wp_variation_associations
wp_variation_priceandstock
wp_variation_values
wp_variation_values_associations
wp_wpsc_categorisation_groups
wp_wpsc_coupon_codes
wp_wpsc_logged_subscriptions
wp_wpsc_productmeta
Here's another link that I think you'll find helpful:
http://www.instinct.co.nz/forums/topic.php?id=596
Happy developing!