How do I rename styles / remove part of style name

[prhmusic]

I have styles that are named like this:
Heading 1,DRM_H_Heading 1,HCIS_H_Heading 1
Heading 2,DRM_H_Heading 2,HCIS_H_Heading 2
Heading 3,DRM_H_Heading 3,HCIS_H_Heading 3
The "DRM_H_Heading [number]" portion of the name is an out-of-date naming convention and the "HCIS_H_Heading [number]" is the current naming convention.
How do I find all instances of "DRM_H_Heading [number]" in the name of the style and strip that out?


Paul Hanson