See: http://home.earthlink.net/~wordfaqs/Overbar.htm
for an excellent discussion of achieving this using an
EQ field.
Although this particular discussion has a focus on creating (say)
an 'x' with a '¯' (bar) over the top - the method will work for
any pair of characters.
Should you be trying to create accented characters (Ã,ë,Ç,ñ,é etc),
then see: http://word.mvps.org/faqs/general/InsertSpecChars.htm read ALL
of it!
If, on the other hand, you are trying to get one character to _overprint_
another, click between the two. Then go to Format>Font>Character Spacing,
choose Condensed from Spacing list and adjust the spacing value as necessary.
