Why?

Why is it that when I decide to update and catch up on this blog do I find that my Photoshop is no longer working and all I want to do is simply resize a picture for the header? And why when I upload a header picture and it says it will be resized to fit it really does not and only shows one corner of the picture? Ahhhhhh! Allison and Rikki, you see what you have gotten me into!?! Want to resize a pic for me?