Using if on index page

I have am image I only want to display in the home page. I want to use an "if" statement to do this. What would be the correct syntax to use to accomplish this?

Here is the code string that I want only on the home (index) page.

Thanks-

Better would be to put your image in your template's images folder and then use the following

<?php
if ($this_is_homepage) {
  zen_image($template->get_template_dir('az_info_image.jpg', DIR_WS_TEMPLATE, $current_page_base,'images'). '/' . 'az_info_image.jpg', 'image alt text', 'image width', 'image height');
}
?>

You don't need the table stuff unless you're trying to give your HTML a 1990s retro vibe.

"You don't need the table stuff unless you're trying to give your HTML a 1990s retro vibe."

LOL - the template I am using contains some tables. I know, how old school. :)

Thanks so much.

This does not seem to work, any other suggestions?