I am a noob at coding and am trying to edit the Guestsense extension so that it will only tell ppl that they arent logged in and the link to sign up... and not display the adsense because the website I would like to put it on is non profit...

<?php
/*
Extension Name: Guestsense
Extension Url: www.lussumo.com/Add-ons/
Description: Adds Google Adsense at the top of the discussions
Version: 0.3
Author: WallPhone, based on existing code by Alexis Bellido
Author Url: http://wallphone.com
*/

function InjectAdsense() {
echo '<div align="center">
<script type="text/javascript"><!--
google_ad_client = &quot;pub-5163550033929978&quot;;
google_ad_width = 728;
google_ad_height = 90;
google_ad_format = &quot;728x90_as&quot;;
google_ad_type = &quot;text_image&quot;;
google_ad_channel =&quot;3348340772&quot;;
google_color_border = &quot;FFFFFF&quot;;
google_color_bg = &quot;EEEEEE&quot;;
google_color_link = &quot;008000&quot;;
google_color_text = &quot;000000&quot;;
google_color_url = &quot;336600&quot;;
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></div>';
}

if ( ($Context->Session->UserID == 0) && (in_array($Context->SelfUrl,
array("index.php", "categories.php", "comments.php", "post.php", "account.php", "settings.php"))) ){

$NoticeCollector->AddNotice('Please <a href="'.GetUrl($Configuration, 'people.php').
'">sign in</a> or <a href="'.
GetUrl($Configuration, 'people.php', '', '', '', '', 'PostBackAction=ApplyForm').
'">apply for membership</a> to remove the ads');

$Context->AddToDelegate('NoticeCollector', 'PostRender', 'InjectAdsense');
}
?>

that would work, but i want it to be a banner across the top

works great, thanks