I have an extremely important xls Worksheet file, which of
course, no back up was made. I am trying to fix it for somebody but I
keep
hitting dead ends. I have Excel 2003 here, but if I try opening it up
in
any version it comes up with the error "Unable to read file". I am
just not sure where the 'corruptness' of the file is. What would make
my life easier would be a program that would
automatically fix an Excel file.. but if theres not does anybody know
where
I might find information on the XLS format?

Thanks!