$password=$_POST['password'];
$getforuminfo=mysql_query("SELECT * FROM ibf_members WHERE name='$username'",$link) or die(query_error(__LINE__));
$getforuminfo=mysql_fetch_array($getforuminfo);
$converge=mysql_query("SELECT converge_pass_salt,converge_pass_hash FROM ibf_members_converge WHERE converge_id='$getforuminfo[id]'",$link) or die(query_error(__LINE__));
$converge=mysql_fetch_array($converge);
$end_pass=md5(md5($converge['converge_pass_salt']).md5($password));
if ($end_pass == $converge['converge_pass_hash']) {
// password is right
}
else {
// password is wrong
}