Thanks Jason!
I have one more question about this. In the ps3_productcategories table is the first column/ProductCategoryID just an autogenerated column? And what is the relationship with the ps3_products table then? And then exactly how do I relate this to the ps3_productcategories table? I know that the ps3_categories table has the product category IDs - which are autogenerated. Then the category name and the the sub-category linking for these.
I'm just trying to figure out how I link up my products categories from the ps3_products table via the ps3_productategories table when I do the batch upload? (A database map - like the one with the Database Kit sure would be nice for this Power Store database!)