Template Main Area Width

I would like to make my template with 1100 instead of 960. I have changed my bg1.jpg etc resolution to 1100 X 542 as well. Now I have white margins on left and right side. What else do I need to change?

You can change template width and menu width using template parameter. If you also change width of flashes menu then you need to adjust images for flashes menu bgX and also subX if needed.