Add Sizes to Products on Oscommerce Shop

Remove all the exsisting sizes on... [login to view URL] Add the folloing sizes for all products..... dresses - small, medium, large l sets - small, medium, large l jumpsuits - small, medium, large l tops - small, medium, large l bottoms - small, medium, large l maxi - small, medium, large l plus size - XL, 2XL, 3XL l basics - one size l lingerie - regular, plus for example dresses category have all the same sizes for all products in that category this size needs to be seen in chekout with products and also be visible on backend of admin when viewing orders $20 Need done now l NO AGENTS - DRECT CODERS Only Thank You