You can't have a two-character bullet, but you can have as many characters
as you like as part of a numbering style, provided they are all from the
same font. The articles at
http://sbarnhill.mvps.org/WordFAQs/QandA.htm
(Word 2003 and earlier) and
http://sbarnhill.mvps.org/WordFAQs/QandA2007.htm
describe the general process of setting up "word bullets," and the rest of
the process would be to change the font of the "numbering."
--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
http://word.mvps.org
In case you can't have a two-character bullet (which I suspect you
can't), you could use the "White Square with Vertical Bisecting Line,"
Unicode 25EB in the "Geometric Shapes" range. This gives you two boxes
you could check off or fill in. You'll find it in the fonts Arial
Unicode and Lucida Sans Unicode (and maybe some others).