OK I give up I can't figure out what to do with this code.
INSERT INTO va_categories (category_name, parent_category_id, category_path, is_showing)
SELECT (va_c2k.SubCategory) AS 'SubCategory Field', va_c2k.cat1, '0,'cat1',' AS category_path, '1' AS is_showing
FROM va_c2k
GROUP BY va_c2k.cat1...