Please help with rollovers, thanks!

Hi, i'm relatively new to Photoshop (CS) but i'm using it (and ImageReady) to create layered rollover buttons for my DVD Studio Pro project. I've figured out how to create a rollover with an "over" and a "down" state but my problem is that i want the button area to be small but the image change for each state to encompass the whole screen (basically the buttons will be a series of lights and when rolled over or pressed will light up the whole screen). so far i can only have the small area of the button change or have the whole screen as the button (which is no good because i want to have many buttons on each page). Perhaps each rollover state needs a different background? How would I do this?

My other problems, which may not be relevant to this forum, are:

a, I want to add a sound effect to each of the roll over states.

b, I'm tring to figure out how to have a page purely of audio tracks which play when pressed without changing the page.

I think these may be questions for a DVD Studio Pro forum?

What you are trying to do will prolly be better handled with flash.

Not saying you can't start in photoshop, but actionscript/flash will go a long way toward helping you accomplish what you are looking to do.