So anyway, I can't supply old files or check anything technical for modders etc because my old PC has all the files and it has no graphics card because it is in the new one and I'm not risking removal again unless I have to. Once these new 1080 cards reduce in price I'll get one of them and the old pc can have its old card back.
So, that aside, I now live in virtual reality (Vive) so I won't be playing "2D" games, including this one, for a while. Once I have the new card I might reinstall BGRV to try this on a giant cinema screen in the headset as that could be a worthy new experience that might lead to a revival.
I continue my search to find a deeper game, but it's an increasingly shallow gaming world out there. At least now with VR we have a new type of absorption.
So there you are.
Thanks to those who have answered and continue to answer questions on this mod's behalf.
Good Morrow