Find and Replace in Files

Thanks for the input folks. 
I managed to achieve my goal using your suggestions but in a round about way. 
Hope Adobe update or make this a bit easier for folks at my level. 

Thanks Nancy.

This is replacing one string with no variables.

For instance data-lightbox=" with data-lightbox="new data"

My search needs to encompass lots of different variables between " and "

For example:

data-lightbox="Sunrise @2926_2.jpg"

data-lightbox="Sunrise-1.jpg"

data-lightbox="StAsunset.jpg"

I have hundreds of different file names in many directories and all need to be changed to one value.

data-lightbox="New Name"

So my search need to be able to find data-lightbox="Any character"

Or am I wrong Nancy in how advanced works?

Thanks Jon that did help a lot. Very good article.

However, perhaps I'm being stupid. I can't get it to look at data-lightbox="Sunrise-1.jpg"

The search stops at data-lightbox="S while I need it to go all the way to the end (") or even the last .jpg

I've tried different combinations, the last one being data-lightbox="[\w] and data-lightbox="[\w]JPG>