no probs at all, it just doesn;t disaply left and right columns and is more likely to fit on a small screen - here's my adv_portal template:
Code:
$stylevar[htmldoctype]
<html dir="$stylevar[textdirection]" lang="$stylevar[languagecode]">
<head>
<if condition="$pages['name'] == 'home'">
<meta http-equiv="Cache-Control" content="no-cache" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />
</if>
<title>$vboptions[hometitle] <if condition="$pagetitle">- $pagetitle</if></title>
$headinclude
<if condition="$show['inlinemod']">
<script type="text/javascript" src="clientscript/vbulletin_inlinemod.js"></script>
</if>
</head>
<body>
$header
$navbar
<table align="center" class="page" cellspacing="0" cellpadding="0" width="100%">
<tr valign="top">
<if condition="$show['center_column']">
<td valign="top">
$home[centerblocks]
</td>
</if>
</tr>
</table>
$footer
</body>
</html>