Thank you for your quick reply. My appearance tab doesn't have a header option. It's a wordpress version that was upgraded to 3.5.1. My appearance only has "themes" and "editor" as options -- it seems like there were more options there before the upgrade.
Just for fun, I installed a new wordpress 3.5.1 in a test folder and the new version has "themes", "widgets", "menus", "header", "background", "vortex options"....aha, there's a clue.
In my upgraded wordpress, I haven't activated the Vortex theme because I didn't want to completely trash my site until I had tested a few things out. I'm assuming maybe these extra options come with the vortex install?
Btw, I tried your solution on the test blog and it worked! Thank You!