Mike,
Thanks!
This one is what I needed.
Frankly, this is the one that will alleviate frustration for me.
Many times, someone will ask me for a certain image. 
Sometimes, Terry will ask to see some bird or water scene that I sent him a while back.
All he is able to remind me was the file name.... _MG_6543 or something like that.
"Wonderful!"
First of all, my camera has been through the numbers three times already.
Second, I have tons of water and bird shots; folders are named, but I don't have a clue what numbers (image filenames) are inside.

Now I can type in 6543, and click on the new file/folder search button, and VIOLA!
It searched through 250,000 in a second and popped every image or file with that name.

In my case, I tell it to search C:\Pics   
All my images are in folders below that main folder...
If it's an oldie that I need, then I only need to change the search parameter to D:\Pics; or Y:\  (my backup drives.)

It even works on my really old images stored on CDs  (before DVDs), and of course DVDs.
All I had to do was type in the Drive letter for my DVD drives.


Bye Bye Lightroom.

Fred