Update old .xls excel files to the new .xlsx or .xlsm format
This excel macro will recursively convert the old xls file to a new xlsx or xlsm version The new file format (xlsx or xlsm) is selected automatically
Some directories (windows, program files and PerfLogs) are excluded
Code for the recursive folder search is based upon this article http://www.ammara.com/access_image_faq/recursive_folder_search.html
Error checking is added to handle file access (rights) issues