Splitting 512 square PVR files into 4 separate windows

Question

To conserve space, we are attempting to split a pvr animation which is 512 pixels square into several smaller windows, or 2x256sq + 8x64sq along the bottom.

This will mean that not as much space is wasted by views being off the screen, and therefore will take up less space to download.

For an initial test, we're doing 4x256 to keep things simple.

Right now the animation is stored in a UIView, which is pointed to the ViewController. Should I have 4 UIViews all of which has its center at different corer?

I have VERY confused regarding how UIViews, UIViewImages, and UIViewControllers work together. Is there a good tutorial online somewhere?

Thanks, C