Paint can resize, pretty well. To do it, you hafe to go to image at the top, then go to Sketch/Skew. Now, type the percent of the image that you want the image to change to IN BOTH PANELS. The reason you hafe to do this is because if you do one panel bigger then the other, then the image will be kinda distorted and look unprefessional.(the image is 771/402 so 175 would be a good percent for each.)