Sorry, I've answered this question twice now and obviously I've clicked the wrong button each time and not saved it!
How to upload the header is set out in the readme.pdf. In addition, there is a video on it here:
http://www.youtube.com/watch?v…..JhYnXmYjZY
About 1 minute in you will see the instructions for uploading your own header.
In summary:
If you have a header graphic make sure you change the width of the site to suit your header in the global tab and click the show header radio button on the layout
change the height of the header to suit your header height in the header tab.
In the header section upload your header from your computer and click upload
In the header drop down menu choose image rather than gradient etc
if it is a small image that you need to tile choose repeat from the drop down menu. If it is a full width banner choose no repeat.
refresh the browser. You will see the header in your header area. select it using the radio button click the save changes button
I use both Firefox and Windows Vista and Hostgator without problems.
If you are experiencing problems possible causes are:
1) you have not selected show header in the global tab
2) you have not selected image in the header tab drop down menu
3) the header images file on the server is not writeable ie the permissions are not set to 755
Hope that helps
Leanne