Coincidently, I am looking to do the same thing on my board, as well!

This is what I am trying to accomplish..
The image below shows how I want, each red box represents a different image.
Now, here is a forum I've seen, which (I don't know if it uses 3 images) but could be using 3.
I don't want 1 full image, because apparently it could cause some problems, so 3 would be better. Understand what I am trying to say?
I installed a hack on my forum to separate all the main forum categories into its own box. They all can be the same.