This is an easy one Im sure...( i hope too!)

So far all my normal sized images, are directly in my "images" folder.
I'd like to move them into their own "images/brand1" and "images/brand2" type folders. Then of course doing that with Large and Medium folders also.

Question: Is there a way to redirect all my products, to point to the new location. Rather than going into each product listed and resellecting the image location?