Minor adjustment to an old plugin

How difficult would it be on an old 32 bit plugin that requires a mouse press to "enter" -to rework it so that it accepts the keyboard "enter".  I am a professional photographer and the plugin in question is IMO the best highlight/shadows/mild colour cast corrector ever written - the developer has updated the plugin to a new version + 64 bit and IMO ruined it. So this plugin keeps me on 32 bit PS as well.  I am sometimes processing 6-8000 pictures at a time using autoloader and actions.  I would have no problem paying someone to do it if it is possible.  It is an .8bf plugin written probably early 2000.