Find Column with hours in the header and format it accordingly

Hi,

what I am tying to achieve is to locate all columns in my work sheet which contain the word ‘Hours’ in the header e.g. ‘Billable Hours’, ‘Hours Worked’, ‘Total Hours’ which can be located any where between columns ‘A1 to ‘IV1’ and then format them to a number with two decimal places.

Any help would be greatly appreciated

Excel version 2003

Many thanks


Rob