fn key controls on ASUS laptop

Hi again all,
Lately i've been trying to capitalize on the benefits of fn keys with a few minor problems... all to do with the programs it opens. For example, i use the internet function key, it opens internet explorer (when my default and preferred browser is chrome), the media keys (up down left right for songs / movies) only works with crappy windows media centre when apple is clearly ftw.Is there anyway to change which programs these keys open? or alter their functions?
im on vista ultimate x86
my laptop is an ASUS X56Vseriesthanks

As far I know, you can't change the functions. I've tried that myself.

it depends on how the buttons work.

what do you mean by that loony?

what signals they trigger inside the windows OS. Sometimes those signals can be trapped by other programs.