Hi, How do I change the view of images in PhotoShop CS4 back to how CS2 did it?

I need to be able to compare images side by side, and the new layout of CS4 doesn't have that as a default view, and frankly it's driving me crackers for a number of reasons, not just the inability to see more than one image at one time, also there's the way the zoom works, or rather doesn't work like it used to, now I can zoom in okay but when I try to zoom out the view stays to one side instead of centralising the image - this means I need extra keystrokes to get back to where I was before zooming in - it's a real time waster.

Can anyone help me set PhotoShop up correctly?

I.e. the way I want it?

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