Hello,

ZenCart 1.3.7, MySQL 5.2.1

I am trying to determine the best way to add a new div underneath my logo. The page currently has the top navbar, the logo, and then content. I want it to look like this.
Code:
----------------------------------------
|                   Nav Bar                 |
----------------------------------------
|                                               | 
|                 Header Image          |
|                                               | 
---------------------------------------- 
|               New Div                    |
|                                               |
----------------------------------------
Which file do I modify? I am more than comfortable with PHP, HTML, and CSS, I just need to know which file contains the code. Please let me know if I my description is unclear.

Thank you.