// Otherwise they're a guest - this time ask them to either register or login - lazy bums...
else
{
echo '
', $txt['welcome_guest'], '
<script language="JavaScript" type="text/javascript" src="', $settings['default_theme_url'], '/sha1.js"></script>
<form action="', $scripturl, '?action=login2" method="post" accept-charset="', $context['character_set'], '" style="margin: 4px 0;"', empty($context['disable_login_hashing']) ? ' onsubmit="hashLoginPassword(this, \'' . $context['session_id'] . '\');"' : '', '>
<input type="text" name="user" size="10" />
<input type="password" name="passwrd" size="10" />
<input type="submit" value="', $txt[34], '" />
<input type="hidden" name="hash_passwrd" value="" />
</form>', $context['current_time'],'<br />';
}
echo '
</div>
<a href="'.$scripturl.'" title=""><span id="logo"> </span></a>';
That last line is Line 279 of your template. Just add in the url of the page you want to link to, like this:
<a href="http://www.homepage.com" title=""><span id="logo"> </span></a>';