Hi Jim   ...   close, but not quite 

    ...   Will confess, I've no idea what you were doing, or why, so I just copied and pasted into the boxes within the software 

    ...   the result is that it ALMOST does what I want   ...  except it does it with the LAST blank space in the file-name, when I need it to do it in the FIRST space.
Any further help greatly appreciated.
Is there a simple explanation to what you are doing   ...   something a simple soul like me can get their head around? 
 Thanks!
Ahhhhh! .....      3am and lateral thinking raises its ugly head   ...   I think?  
 1/ Select folders to rename
2/ Function (2) File: Reverse then Rename 
3/ Apply your RegEx solution AND Function (2) set to Reverse again and Rename!
Clunky, but it works  
  Anyone have anything better (Please? 

 )