title: Change the default error message for data type in mvc3
body: <p>I'm developing in mvc 3 and have a little question.
  I want to change the default error message for invalid data type.
  let say I've a model with the prop Price, and I want his error message for input "aaa" will be "The only value you can enter here is a number".</p>
  
  <p>what is the easiest way of doing that?
  (I want to do it for all of my models)</p>