Sorting left tor right in groups of 3 columns based on the total of one column in each...

Hey,

I'm trying to sort groups of data (columns of 3 = a group) based on the highest totals from the middle column of each group however I have no idea where to start and how to do it.

For a screenshot please click the following link \1 or use the attached image

It's easiest to show in the excel spreadsheet so, please see the attachment below.

Any help would be much appreciated.