Change Header Width?

This hopefully is an easy question…where do I change the header banner width, currently the image is resized to 728px × 220px and I want to to be 800px x 220px.

If it helps the site is:

Any help would be greatly appreciated.

You can change the header width in top.tpl


Change: width="{$manifest.Customer_logo.width" to width="800"

So it is:


It’s not the customer logo that I am trying to change.

I’m trying to change

so that the banner will extended to the width of the site…