This is known to work for WordPress version 2.1

First, use a photo editor or Kubrickr to get a picture ready.

In your default theme folder, you’ll see the images folder. Inside that is a file called kubrickheader.jpg. You should overwrite that file with your new image, using the same name.

Now go to your WordPress Admin Panel and click on Presentation.

Now open the “header image and color” tab.

Now under the header image you will click “Advanced”

Now click the button that says “Select Default Colors”

Your new header should appear above the buttons.

Why does that work? I have no idea.

The WordPress guys are trying to make things easy for the newbies, and in so doing, they make things hard for those of us who have a decent understanding of CSS.

Oh, well. At least it’s fixed.