How do I set the view to default to last modified
 

I like my files to always be in last modified order with the most recently
saved file at the top of the list. In Excel 2000 I set the order in the open
window and from then on all files in all folders were in the correct order.
Recently I changed to Excel 2003. Since then I have had problems. I change
the vies as before but each time i close the application it reverts to
sorting by name - in alphabetical order.
Any suggections?