I have one list that containsPriceWidget1 PriceWidget2Price PriceI have a second list that customers update by adding rows that are Orders:Order QuantityWidget1 QuantityWidget20001 6 80002 4 0etcFor each order I want a Total that is (QuantityWidget1*PriceWidget1)+(QuantityWidget2*PriceWidget2).Occassionally the Prices may change, which must be used corrctly in new orders, but I don't care one way or the other if past orders change.I have SharePoint Services 3.0, Office 2007 and SharePoint Designer.Any help would be greatly appreciated. Thanks.