mySQL php data grouping

[Anon]

Hi
This may look silly (absolute begginer):
I have this mySQL table 'clientes', with fields id, nome, unome

I want to display data like
unome (Johnson)
nome (Mike)
nome (John)
unome (Spielberg)
nome (Steven)
nome (Thomas)

I've tried this code (and others similar. Basically I've tried a lot of variations within this scheme). Can't do it. Help, please ...

$titulo = mysql_query("SELECT unome FROM clientes GROUP BY unome");
$result = mysql_query("SELECT unome, nome, id FROM clientes ORDER BY unome, nome");

    while ($nomes = mysql_fetch_array($result) and $unomes = mysql_fetch_array($titulo)) {
    $uapelido = $unomes["unome"];
    $cf = $nomes["id"];
    $apelido = $nomes["unome"];
    $nome = $nomes["nome"];

    echo("<tr><td width='25%' border=0><b>
    $uapelido</b></td></tr>"); 

    if ($apelido == $uapelido) {
    echo("<tr><td width='75%' border=0>$nome</td></tr>");
    }
    }

Tks
Artur