For your first question:
Turns out that Zencart doesn't place that heading there by default, probably because the store name and address usually go there. You can add it by editing tpl_contact_us_default.php.
Find this line near the top and add the line (in red) just below it.
<div class="centerColumn" id="contactUsDefault">
<h1 id="contactUsHeading"><?php echo HEADING_TITLE; ?></h1>



