the header image is
HTML Code:
http://medicalgradeoils.com/wp-content/themes/atahualpa/images/header/MedicalGradeOils_Header1.jpg
but when I put that in the browser address br, I get a '403 Forbidden'
this coul be caused because teh file isn't in that folder
the name is misspelled (case IS important)
the file permissions are wrong
check these all out. If you can't put the full url in the address bar and see the image then WordPress can't display it eithor.