cs-cart multi vendor shipment together. combine.

i have cs-cart multi vendor- normally i set vendor's shipment. but someone purchase product then shipping come out sperately. i want sum .. for example) A vendor -----usps ,,,,,B vendor ----USPS C vendor ----FEDEX some client purchase A,B,C vendor's product then shipping has to come out like this on check out page. A,B VENDOR shipping -----USPS (3~~4DAYS) ====10 US$ C VENDOR shipping ----FEDEX(1~5 DAYS) ====5 US$ --------------------------------------------------------------------------------------- SUB TOTAL 15 US$ MAKE A ADDON --- WHICH CAN ACTIVE OR DISABLE. ACTIVE ----- COME OUT SUM ,,, DISABLE---COME OUT SEPERATLY. FOR UPDATE OF CS-CART. so please bid only know well CS-CART SOLUTION. DO not bid beginner ----- DO NOT BID beginner. i need SPECAILIST OF CS-CART MULTI VENDOR. PLEASE PLEASE ONLY SPECAILIST BID FOR THIS PROJECT