Ok, I have been following the help documentation and I am a reasonably bright guy, I work in IT so I am not totally dense, but man oh man I am not doing a good job of changing the header jpg. I am using the default theme template. Within the help guide I see where you can use a utility called Kubrickr that will do it for you. The trouble is you have to use a photo on flickr and not a photo from your own site (or own computer).
Is there another utility out there that will make changing the default header jpg easier than modifying the header.php file, ideally one that I can use a photo from my own site or computer?