If it were me I would make a database that I only had access to (for the login) then I would make a combo drop down box in an array something like
echo "<select NAME='User' value=$username>";
$connection = @mysql_connect("server", "name", "password") or die("connect");
$db = @mysql_select_db("DATABASE", $connection) or die ("no connect");
$sql = "select * from userdatabase";
$result = @($sql, $connection) or die ("no Run");
while($row = mysql_fetch_array($result)) {
echo "echo "<option VALUE='$row[x]'>$row[x]";
}
note row[x] stands for the row number of the field you wish to give a value to in your dropdown.
Good Luck
