[AccessD] Normalizing issue

How do you guys deal with people that use three or more names
professionally? I do -- Susan Sales Harkins. 
 
Do you store the second name with the first or use three fields? The middle
name really isn't a "middle" name. It's actually part of the last name, but
the last name is the real last name -- so if you stored it with the last
name, you'd have to depend on users to enter it correctly, as in Harkins,
Sales --  which is a mistake before you even get started... And how do you
write in the flexibility that handles 2 or 3 names? 
 
Susan H.