I am doing a catchup on reading older posts, so if someone has already answered this, I apologize for repeating it. But here's how to do filled letters in photoshop/photoshop elements:
Start a new, blank project -- it's likely best if you use a white background. Choose a font that is nice and chunky, make it big, and type your name. Now under File, choose Place, and find the picture you want to use and double click on it. Resize if necessary so that it covers your entire word.
Now, you do what's called a clipping mask. All you have to do is Ctrl-G. Voila! You're done
Hope that helps and I am sorry if I'm repeating what someone else has already done. That's the problem when you're reading old posts and trying to catch up!!
==Lennie==