Am I limited to the 6 available data feeds in Choose Datafeeds?
No, you can use any of the data feeds available at: http://faq.ordersupport.com/doku.php?id=wholesale:shipping:vendors
1. Make sure STCtoCart is in "Fresh New Database" mode!
2. Open phpMyAdmin and browse STC_Config table.
3. Edit csv_file to show the data feed you want. For example: "by_vendor/AL-02.csv"
Open STCtoCart and click Options > Manual Update, Click the button sequence listed at Start Part 1 - Download csv, Create Categories, Create Database