Bulk Rename Utility

Is it possible to rename a doc suffix?

Currently after I take and rename my images I create a doc file with the image number.
For example:
Image #1 is saved as 123456_1
Image #2 is saved as 123456_2
Doc is saved as 123456.doc HOWEVER, I want the doc to be called 123456_done
The suffix doc being completely replaced by UNDERSCORE DONE ex: _done

Is this possible?
Thank you

12:Filters, Mask: *.doc (adjust other settings there as needed)

Renaming Options -> File/Folder Extensions ---> Rename File Extensions As Being Part of Filename

3:Replace
Match: .doc
Replace: _done