Left Sidebar banner ads

Hello,

My crazy web designer has forgotten to tell me how to add banner ads to my left sidebar and I couldn’t figure out how. I’ve tried looking up on the web and tried several codes but it wouldn’t do anything. Here is what the sidebar code looks like in my “editor” panel.

<div id=”sidebar2″>
<?php
$banner = mysql_query(“SELECT * FROM wp_ads ORDER BY order_ads”);
?>
<table width=”100%” border=”0″ cellspacing=”0″ cellpadding=”4″>
<?php while($dbanner = mysql_fetch_array($banner)){?>
<tr>
<td><img src=”<?php echo bloginfo(‘url’);?>/resizer.php/<?php echo $dbanner[“img_ads”];?>?width=180&height=234&image=/wp-includes/images/<?php echo $dbanner[“img_ads”];?>” width=”180px” height=”234px” border=”0″/></td>
</tr>
<?php } ?>
</table>
</div>

Can anyone help me ad banners please? Thank you.