I have PSE and use it to edit my pictures before printing. But when I want to print a perfect square, say 3x3, I can't get it to make it that exact dimension. I've cropped the picture the way I want it, then I try to change the dimensions in the Print area and it always comes up with fractions of an inch in addition. Is there a way to crop to a perfect 3x3 or a way to print a perfect 3x3?
Just re-read your OP and realize you're trying to resize in the Print menu. Instead, try this: go to Image > Image Size and change your size there. If you're getting fractions of an inch, it's because unless your photo is a precise square, Photoshop is "constraining proportions" to maintain the aspect of the photo and not distort it in one direction or another. This link may help you understand it: