on your testpage.php, use this
there are four possibilities, depending on php, and your method
either use
echo $txtuser . " " . $txtwd;
or
echo $POST['txtuser'] . " " . $POST['txtwd'];
or
echo $GET['txtuser'] . " " . $GET['txtwd'];
or
echo $HTTP_POST_VARS['txtuser'] . " " . $HTTP_POST_VARS['txtwd'];
one of those will work guarenteed