Glad that helped. I've done some research and found that (apparently) Windows XP supports "natural order" sorting and uses it by default (which is of course a royal PITA if you
don't want it). Mac users have the option of installing a system extension such as
http://www.naturalordersort.org/; I haven't yet found an equivalent for older versions of Windows. Us Linux users always use filenames like "file_20031104_001.jpg" anyway...