Deb,

According to Cindy Meister (and I take her word for it) :

Generate a number sequence like Excel uses to number columns
 Traditional outline numbering using alphabetic characters proceeds A...Z,
AA, BB, CC. But most people these days are so accustomed to the sequence
used for Excel columns (A...Z, AA, AB, AC) that they prefer this in there
documents. It is even a requirement for legal documents in some counties /
states.
 No current version of Word supports the Excel-type numbering. But it can
be achieved using SET and IF fields

 See:  http://homepage.swissonline.ch/cindymeister/NbrFAQ.htm#XLTypeNr

However I had to adapt her proposed QUOTE/SET Fields as follows:

{ Quote { Set ABC { =  ABC  + 1 } }{ SET ABC2 { IF { ABC } > 26 { IF { =
MOD({ ABC }, 26) } = 1 { = ABC2 + 1 }{ ABC2 }}{ ABC2 }}}{ SET ABC1 { IF ABC1
< 26 { =  ABC1 + 1} "1" } }{ IF { ABC } < 27 { ABC1 \* ALPHABETIC }"{ ABC2
\* ALPHABETIC }{ ABC1 \* ALPHABETIC }" }}

 --
 Greg Maxey
 A peer in "peer to peer" support
 Rockledge, FL
 To e-mail, edit out the "w...spam" in gmaxey@whamspammvps.org

 > Hello,
 >
 > I need to be able to change the number list from
 > aa.
 > bb.
 > cc.
 >
 > to
 >
 > aa.
 > ab.
 > ac.
 >
 > In my document, when I get to zz., Word starts the
 > numbering with aaa. etc. when there is a really long list,
 > it can, and has gotten to aaaa., which is annoying when it
 > comes to spacing.  If I could change my numbering to go
 > from aa., ab., ac., then when through the "a" series go to
 > ba. bb. bc. etc. I can create a much longer list of
 > numbers and only use two spaces.  However, I can't seem to
 > figure out how to get Word to do this.
 >
 > I have Word 2002 at home and Word 2003 at work.
 >
 > Can anyone help?
 >
 > Thanks