ORDER BY not ordering

[joshg]

I am trying to get the following query to work.  All fields of relevance 
are varchars (though of different lengths).  It does not sort properly.  
It seems, though not absolutely certain, that when the 
project_program field is null, I get problems, e.g. last names out of 
order even though in the same division and project_program.

SELECT
     ID,
     first_name,
     last_name,
     division,
     project_program,
     admin_title,
     appt_phone,
     degree_md,
     degree_np
   FROM directory
   ORDER BY 
     division, project_program, last_name, first_name

It's not the data.  Using group by doesn't help.  Any thoughts 
greatly appreciated


=========================
Josh Greenberg, Esq.
Dowling 302
One Boston Medical Ctr. Pl.
Boston, MA  02118
Tel) 617-414-7415
FAX) 617-414-3833
E-mail) Joshg@stripped