something like this should get you headed in the right direction
<?
$query = "select * from tablename order by whateverfieldname;";
$result = mysql_query($query);
?>
<select name="selectperson" class="forminput3">
<option value="">Select</option>
<?
while ($row = mysql_fetch_array($result))
{
?>
<option value="<? echo $row['name']; ?>"><? echo $row['name']; ?></option>
<?
}
?>
</select>