[SOLVED] Images Don't Show in IE

Hi - I'm new to the forum, but have read everything I could find on this issue-
I can see both the Banner image and the Banner Overlay in Firefox. My friend is running IE 9 & Firefox and she says the Banner Overlay is on top of the banner and it is NOT on my computer running Firefox. It shows that the banner is shorter than the full width and the Overlay is in a blank white space to the right of the banner.
However, when I go to IE 8 on my computer (I'm running IE8) there is no Banner at all and the Banner Overlay has that small box thing with a red X which shows the picture is not found.
The site is http://gkicjax.com
The Banner Image was checked and is in the correct header folder and is named gkicbanner.jpg
It was uploaded using FTP
The Style Layout is set at 99%
The Banner size is 978px X 188px
1. Why does my friend see the banner larger than I see it?
2. Why can she see the Banner in IE?
3. Why can't I see the Banner in IE, nor can my boss?

I'm running Wordpress 3.3 & have upgraded the Atahualpa Theme to 3.7.3

Hel...P, Please.....
Leslie