Código PHP:
<?
$link=mysql_connect("localhost","","");
mysql_select_db("$select",$link);
$result=mysql_query("select nombre,apellidos from empleados",$link);
while($row=mysql_fetch_row($result)){
$row[0]
}
?>
<form action="mostrar.php" method="post">
<select name="select">
<option>echo"$select";</option>
</select>
</form>