I'm using Outlook XP and perhaps the "File As" field is a throwback
for compatibility with earlier versions or something.  But if it
isn't, I can't understand what it is intended for.

I can sort my contacts a million different ways, including by First
Name, Last Name, FullName.  I can also set Outlook to display
"Fullname" as "First Last" or "Last, First".  What do people use (or
what did Microsoft intend) the "File As" field for?

Curious,
Lance