Jdraw,
Nevermind, I figured it out. Here what I did.
Premium_Cost: IIf([Mode]="Ocean",[OceanCost],IIf([Mode]="Broker",[BrokerCost],IIf([Mode]="Small Package",[AirCost],"No")))
Thanks, you guys are a great help through all of this. I truely appreciate this site.