Unique Home Page Attributes (Background Image, Width)

I feel like this must have been answered somewhere, but I just can't find it in my searches.

What I would like to do is add CSS (I believe) to give my static home page a unique background for the "body" section (where text or images would go). I've uploaded the image file to the correct place, but can't get it into the body section.

I would also like to give this home page body section a unique width. I've got the sidebars set to NOT display on the home page, and my attempts to change the width (by adding padding to the center column) have resulted in my desired width on the home page but a really skinny body section on other pages due to the sidebars being in place on these other pages.

Here's the URL: http://www.drjeremysharp.com/test

WP version 3.0; ATA version 3.5.1

Thanks in advance!