Thank you Cherie. That does seem to make sense. Any chance you could point me to the correct spot to insert my banner code?
/light_responsive/customer/main/home_page_banner.tpl:
*}
{if $active_modules.Banner_System and $top_banners ne ''}
{include file="modules/Banner_System/banner_rotator.tpl" banners=$top_banners banner_location='T'}
{elseif $active_modules.Demo_Mode and $active_modules.Banner_System}
{include file="modules/Demo_Mode/banners.tpl"}
{else}
<div class="welcome-img">
<a href="http://www.x-cart.com" target="_blank"><img src="{$AltImagesDir}/custom/welcome_picture.jpg" alt="X-Cart" title="" /></a>
</div>
{/if}