"Gordon" wrote
Up to now file names have been in alphabetical order.
Now they are mixed.
How do I sort the file names into alphabetical order?

If you mean worksheet names, try Chip Pearson's:
http://www.cpearson.com/excel/sortws.htm
--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--