Hey everyone!

I'm having a really tough time figuring out what I would imagine is a pretty simple MySQL database search. I'd like to be able to search for a keyword and use a drop down to designate which column to look in. For example:

Search for keyword: ________________ (text field) by Name, Policy #, or Email Address (drop-down).

Here is the code that I'm currently using:

HTML Form
Code:
<table border="0" cellpadding="0" cellspacing="0">
<form action="search.php" method="post">		
<tr>
<td><input type="text" value="Search" name="term" onblur="if (this.value=='') { this.value='Search'; }" onfocus="if (this.value=='Search') { this.value=''; }" class="top-search-inp" /></td>
<td>
<select class="styledselect" name='searchtype'>
<option value="*"> All</option>
<option value="Recipient"> Name</option>
<option value="Code"> Policy #</option>
<option value="Email">Email</option>
</select> 
</td>
<td>
<input type="image" src="images/shared/top_search_btn.gif"  />
</td>
</tr>
</form>		
</table>
MySQL Query & Display Results
Code:
				
<?php
mysql_connect("localhost", "username", "password") or die(mysql_error());
mysql_select_db("database") or die(mysql_error());

$term = $_POST['term'];
$filter = $_POST['searchtype'];
					
$query = "SELECT * FROM wp_gcl_certificates where Recipient like '%$term%'"; 
					
$result = mysql_query($query) or die(mysql_error());

while($row = mysql_fetch_array($result)){
echo "<tr class=\"alternate-row\">";
echo "<td><input  type=\"checkbox\"/></td>";
echo "<td>{$row['recipient']}</td>";
echo "<td><a href=\"mailto:{$row['email']}\">{$row['email']}</a>";
echo "<td>\${$row['price']}</td>";
echo "<td>{$row['status']}</td>";
echo "<td><a href=\"/gift-certificates-lite/gcl_show.php?cid={$row['code']}\">{$row['code']}</a>";
echo "<td class=\"options-width\">";
echo "<a href=\"/gift-certificates-lite/gcl_show.php?cid={$row['code']}\" title=\"Edit\" class=\"icon-1 info-tooltip\"></a>";
echo "<a href=\"\" title=\"Edit\" class=\"icon-2 info-tooltip\"></a>";
echo "<a href=\"\" title=\"Edit\" class=\"icon-3 info-tooltip\"></a>";
echo "<a href=\"\" title=\"Edit\" class=\"icon-4 info-tooltip\"></a>";
echo "<a href=\"\" title=\"Edit\" class=\"icon-5 info-tooltip\"></a>";
echo "</td>";
echo "</tr>";
}
?>
This works great for searching the table 'wp_gcl_certificates' by 'Recipient' but I can't seem to figure out how to make the column I search by adjustable.

I tried this line:
HTML Code:
$query = "SELECT * FROM wp_gcl_certificates where '%$filter%' like '%$term%'";
with no luck

I'm new to this forum, so I'm sorry if I posted in the wrong category. Any help would be GREATLY appreciated!
Thanks in advance.