In any version of PhotoShop CS or PhotoShop Elements, open your full sized image and navigate to the IMAGE ----> IMAGE SIZE. The dialogue box above will appear. Note that the top section has to do with actual pixels, which is what we really care about and where we are going to work. The middle section has to do with document settings and may be important when you get ready to print your image. The bottom section has a numnber of important checkboxes. For now, just make sure all of the checkboxes are checked.