How to find/repace a bullet in Word?

I have a Word rtf where all bullets from merged text are normal style and
indented. I need to change them throughout the document through a macro but
can't figure out how to "find" the bullet symbol (decimal) 159 and replace
with bullet symbol (decimal) 167. This will be a repetitive result from
merges, so I need to do it with a macro instead of manually highlighting and
changing bullet settings or styles.