REALball,
$req = mysql_query("SELECT `id`, `name` FROM `table` WHERE `uslovie`='$uslovie'");
echo '<form action="file.php" method="post">
<select name="name">';
while ($res = mysql_fetch_row($req)) {
echo '<option value="' . $res[0] . '">' . $res[1] . '</option>';
}
echo '</select>
</form>';