Thanks so much for your help Stephanie!

I have bookmarked your post and will surely visit again

if (!empty($auser['last']))

with this:

if ($auser['nicename'] != 'admin')

So I have added it now and tested it, but it still shows everyone.

I have tried a couple of different alterations, such as ['1'], other user ID’s, etc., but none have the desired result.

Do you have any other suggestions or would it help if I send you my code?

You just need to add an if statement inside the foreach loop that generates the table rows. Here’s how mine looks:

foreach ($allusers as $auser) {
			if (!empty($auser['last'])) { ?>
			<tr class="vcard" id="<?php echo $auser['nicename']; ?>">
                <td class="fn uid"><?php echo $auser['last'].", ".$auser['first']; ?></td>
                <td class="title"><?php echo $auser['title']; ?></td>
                <td class="tell"><span class="areacode">(979) </span><?php echo $auser['phone']; ?></td>
                <td class="email"><a href="mailto:<?php echo $auser['email']; ?>"><?php echo $auser['email']; ?></td>
                <td><a href="http://feeds.technorati.com/contacts/uwc.tamu.edu/?p=<?php echo $post->ID.'#'.$auser['nicename']; ?>">
                    <img src="/images/vcard.gif" title="Add <?php echo $auser['first'].' '.$auser['last']; ?> to your address book"
                    alt="Add <?php echo $auser['first'].' '.$auser['last']; ?> to your address book" /></a></td>
			</tr>
		<?php } } ?>

To exclude a particular user ID, I would use something like this:

foreach ($allusers as $auser) {
                $id = array_keys($auser);
                // since $auser has just one element, we can safely say:
                if ($id[0] != $user_to_exclude) {
                   // <tr> loop here
                }
		<?php } } ?>

I haven’t tested that, but I think it should work.

Did that make sense?

I have adapted the code a bit to suit my needs, but one thing I cannot figure out: I would like to be able to hide a specific person from the list. How can I do that? with an exclude user-ID command or by explicitly using the name of the person? And how and what should I do to hide that person?

Many thanks in advance!

Piet