As all of the templates which exist in the \Web\print folder are displayed for selection we suggest that you copy the supplied templates to a backup folder before changing / renaming to suit your requirements.
Below we have the astun-A4-portrait.html which is a portrait template.
astun-A4-portrait.html
<html><head>
<title>iShare Print To Scale</title>
<script type="text/javascript" src="../js/lib/prototype-1.6.0.3.js"></script>
<script type="text/javascript" src="../FileIncluderJS.aspx"></script>
<script type="text/javascript">Astun.JS.IncludeJS('print');</script>
<!--[if IE]>
<link type="text/css" rel="stylesheet" href="../css/jQuery/astun/ui.all.css" />
<link type="text/css" rel="stylesheet" href="css/printtoscale-base.css" />
<link type="text/css" rel="stylesheet" media="print" href="css/printtoscale-print.css" />
<![endif]-->
<link type="text/css" rel="stylesheet" href="css/templates/astun-A4-common.css" />
</head>
<body>
<div id="wrapper">
<div id="header"></div>
<div id="mapWrapper">
<div id="map"></div>
<div id="atLegends" class="atBottomRight"></div><!-- other possible css classes: atBottomLeft, atTopRight, atTopLeft (you can use 1 at a time) -->
</div>
<div id="footer">
<div id="atGenInfo">
<h1 id="atPageTitle" class="isharemaps-edit-inline">iShare printing</h1>
<p id="scale">Scale: 1:<span id="isharemaps-scale">undefined</span></p>
<p class="printinfo">Printed on: <span id="isharemaps-print-date"></span></p>
</div>
<div id="atCompanyDetails">
<img src="images/print-logo.jpg" id="logo" />
<div id="copyright">© Astun Technology Ltd</div>
</div>
</div>
</div>
</body>
</html>
We have supplied a couple of other sample templates in the Examples folder.