Ok here's a modified version. I didn't need your criteria, as I was thinking for whatever strange reason...
It'll have a form, in fact, you'll need to add another template: email_list with the following in it:
Code:
<form action="emaillist.php" method="post">
Field Number: <input type="text" name="fieldnum" value="10"><br />
What to search for: <input type="text" name="input" value=""><br />
<input type="submit">
</form>
$email_bits
The email_listbit stays the same
Replace emaillist.php that I attached, overwrite the old one.
Type in the field number (default is 10 for you) and then type in the search field the string you want to look for.
It will be case senstive in the search string.
Joel