I presented an idea and example to get you part of the solution. I thought it would get you started...you really didn't provide anything concrete as far as true requirements.

it should be pretty obvious that you could create a cursor to find all the sub folders in the master folder, so whether there is 2 sub folders or 200, it' the same way it's getting the data as the list of files;

something like dir *.* to get the list of folders, then iterate thru each folder for each file beneath the folder.