I am trying to put my custom header in Atahualpa. I cannot figure out where to start. I went into the theme options and under header images I see that there is a directory listed that I am supposed to go to in order to change the image but how do I get there? Can someone please tell me how to access this directory?

Thanks

you need to use an FTP program and upload your image to the atahualpa/images/header folder
you will want to delete the other images there so they won't show up randomly.