I need to be able to type in 0, S, or D into a cell and it stand for a number value such as, 0=0, S=1.5, D=3. I need to be able to change this cell to any of those 3 and it automatically change the number value. In the cells I already have =SUM(G5*H2+G2) all the way through H17. I need to be able to change G2 to either 0, S, or D and it change the value accordingly.