Random selection i DB

Jeg skal bruge en kommando, som hiver tre tilfældige resultater ud fra min DB.

<?
include (\"sql.php\");
$result = mysql_query(\"select * from nyhed\");
$number = mysql_num_rows($result);
?>
<?
        while ($row = mysql_fetch_array($result)) {
?>
<table width=\"100%\" border=\"0\" cellspacing=\"1\" cellpadding=\"1\" border=\"0\">
<tr>
    <td bgcolor=\"#b3bcea\"><font face=\"Tahoma\" size=\"1\"><p align=\"right\"><a href=\"opstart.php\" target=\"MyFrameTwo\"><? print $row[nyheddato];?></a></p></font></td>
</tr>
<tr>
    <td border=\"1\" \"bgcolor=\"#EEEEEE\"><? print $row[tekst];?></td>
</tr>
<?
}