How do you change size of picture an intel webcam takes ?

You can take pictures with the webcam but they come out crazy small. I%26#039;ve had this webcam for a while and it used to take bigger pictures but i cant figure out how to make them bigger. Can anyone help meeee?|||If the small pic is 1:1, the only way to increase the size is to up-res it using an editor like Photoshop. If you want it looking half-way decent, that is.