title: Resized image does not appear in my project
body: <p>I am developping a metro application on w8.
  My splash screen image was too little and appeared just in the middle of the screen.
  What is requiered is a 620*300 px image so I changed the dimensions of my picture and replace it in the project asset folder without changing the name, I looked in the properties the picture is in fact 620*300 pixels, there isn't any error in appmanifest file but when I launch the program the image size is the same, nothing has changed.</p>
  
  <p>What I have to do?</p>