Thanks for the tip. I had trouble doing that because I couldn't figure out how to delete the background. But I did find a way to do it. I created a file that was the size I wanted, then clicked on it with the magic wand and then clicked "delete". The field became transparent. Then I typed the letters in black, because it was hard to see white letters on the checkerboard background. When I was all done I used "invert colors", with white being the secondary color. That worked just fine.