How To List Multiple Files In Multiple Subfolders

Does anyone out there know how I might do the following:

I have a main folder which contains many sub-folders. In turen, each subfolder contains several files. I am interested in creating a text file that within each sub-folder will list certain files in that sub-folder. Example:

"Main Folder"
"Sub-folder 1"
FileA
FileB
FileZ
"Sub-folder 2"
FileA
FileB
"Sub-folder 3"
FileA
FileB
FileZ

Pseudo-code:

Read Main Folder
Do While Sub-folders exist
Do while selected sub-folder contains files
If selected sub-folder contians FileZ then
Write selected sub-folder name to text file
Write time/date stamp to text file
else
loop to next ub-folder
end if
end do while
end do while
Close input and output

Any help offered is greatly welcome. Thank you!!