Creating an excel chart with multiple y-axes

i have three types of data plotting against time on the same chart. all this data types have different ranges so i need to have three y-axes of different data ranges to do effective analysis. i need a way to do this in excel or any other software that can do this for me.
thanks

I think you are stuck to 2 in Excel. Depending on your data you may be able to put in a multiplier to one of your sets and have it then share the same scale...