Combining multiple templates into one

A member of my team has created numerous templates in Excel 2007 for various customers. Each template has some columns that are identical for each (Cust Name, for example), and some columns are unique to each customer. I want to combine all of these individual templates into one Excel workbook and be able to click (select from a dropdown list) the customer name, and have only those columns that pertain to that customer appear. Select another customer name, different columns appear, and so on. Is this possible to do in Excel 2007? [This is my first post, so please forgive any offenses if my question is too long.]