Disable Shift + Arrow Key functions

[PresumingEd]

I have been having a lot of problems with the small shift key on the right of my v570.  

Sometimes when typing I hit the right shift key and one or more of the arrows and erase everything I typed.  

I would throw this computer out the window, but I had the same problem with my previous one.  

Is there a way to disable the arrow keys but still use the annoying volume/brghtness on the arrow keys?

(Tangent: Is there a quicker way to mute than function>tap arrow down?)

[PresumingEd]

I just lost another huge block of writing because of this stupid shift button.  **bleep** you shift button..