Change key functions in Asus U30JC Laptop

Hi, I was wondering if there was any way I could change the PgUp/PgDn buttons on the side of my laptop into VolumeUp/VolumeDown buttons since I never use them. I really don't like having to press the Fn+F11/F12 to change the volume since it is a combination and the two buttons are really far apart. I can't find what I want in the control panel... Also is there any way I can move the volume and brightness indicators that show up on my screen whenever I change settings using the keypad to the side, since they can be pretty disruptive when I'm watching something?

Thanks :)

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