Update Fields Wreeks Havoc!

I've got a Word03 table with a column with simple numbers which I'm trying to
Sum in a cell at the bottom. By reading other posts I discovered that one
way of doing this is to use the =Sum(Above) function and set the print
options to Update Fields upon printing to get it to calculate but since this
is a globally set option, it does all sorts of very scary things to other
documents. If I have a document with feilds in it that isn't locked, it
resets all the feilds to blanks (extremly scary when it just took me 2 hrs to
fill out the form!). My work also has a bunch of old docs that some "smart"
person filled with Mergefeilds (don't even get me started) which are
extremely bothersome with this option selected (but not for anyone else and
they all think I'm crazy!) Anyway, besides going the "Use Excel" route to
create this document, does anyone know a way of summing a column of simple
numbers in a word table??

Thanks in advance!
--Dax
--
I would give my left hand to be ambidextrous!