I have a folder with 40 images.

Actually, I have 3 folders with 40 images in them.

The folders are named 1, 2, 3.
and the pictures are numbered 1-40.

I want a way to quickly make 120 slides. first folder to be the first 40 slides in order of picture number, second 40 the next 40 (in order), and the last 40 the last folder in order.

Is there a way to quickly do this in Powerpoint 2008 without loading 120 pictures individually?

Thank you