You would definitely want to integrate your design into ZC and not vice versa.

To get graphics on a page, you can declare them in the stylesheet in the element that contains the desired space as
PHP Code:
#desiredElementId/Class {
      background-image: url(../images/your_image_path.gif);
} 
and there are ways to fine-tune the position of the image with CSS, as you can affect the position of most anything that has a handle (class, ID, link anchor, etc.)

This is just a sample; your best bet is to study the CSS tutorials online such as at http://www.w3schools.com/ .