Shipping Manual Entry problems

I have products that i get from suppliers that charge a flat rate for shipping.

i also have other products that i need to connect to ups to get a rate for …



how do i setup my cart so that i can enter the freight cost for the flat rate items .

and ones that do not have the flat rates use ups to calculate the rate,



i can not seeem to figure this out …



my flat rates are not all the same … different products different shipping rates…

Does your choice of shipping method depend on who the supplier is? if so, use the supplier add-on to bind products and shipping methods to the suppliers.



Bob