Reply To: Logo image in the nav-bar?

I believe I am looking to do the same thing as Terence.  I am using the Optimal theme.  I would like to move the header logo down so it partially overlaps the slider on the main page and slightly goes below the gray header background on the other pages.  I am going to add a shadow to the logo and I want it to appear as if it is hovering over the header.  You can see my the logo I am referring to at http://legacymillnw.com

I have done this using css on other themes.  I just not sure what to change in Optimal.

Thanks in advance.

Wade