right click on header
click save picture as
this will pop up a little window
click on album or just save in pictures
click save
on your tool bar
the thing at the top
click design
the top item is your header area
click edit
click image from your computer
click browse
and your picture window pops up
find your header and click on it
I can double click mine and it will go right in
if you can't, then click the open box
make sure you click instead of title or you will have one on top of the other
click save
that's it
go to view blog and see your new header
let me know how you do