Solved here... http://your-site-name.com/admin/theme.

But it messes up the CSS, you'll need to jump in there and figure that out...

Hi Mike, I use the same theme, and I think understand your problem...

I saw the header of your Social Network.

First of all, let me tell you, that the header of this particular them is composed of two images, one is that you let it, that says: "Welcome to our Social Work Community", and the other is hte image with "the people" you set up.

The first image is in a PNG format, important!!!, respect PNG format, otherwise happens the issue of your topic. And this image is in transparent way.

IMPORTANT!!!...

You can Upload other PNG image with a different height, try to respect the width, but if you Upload a PNG image with less, more less heigh, your can Upload the OTHER with the same heigh and get more space for the rest of your site.

The trick, is just to upload a transparent PNG image, with the height U choose, so the  "Welcome to our Social Work Community" image wont appear. And U can have a better impact design heather.

I hope be usefull... bye.

So I did as you said here and kept the same dimensions for the header image. which seems to be 318x169 and left it as a transparent png.  But it's moving the header image to the upper left of the page and moves the nav bar up and misaligns everything.  Am I missing something?