Hi, I have a photo frame and it has four holes, 3 of them are 45mm squared and the other one is 85mm x 40mm. I want to print them out at Morrisons/Boots and we only print standard size like 4" x 6". If I just rezise the actual image to the correct size for the frame, then the printer at work will just stretch the image to become 4 x 6. Is there any way of resizing so I can just pop into the shop and print them out?