The PHP 4.2.3 does not send value on script like bellow:
"<?php
if (isset($submit) && $submit=="yes")
{
     echo "Nome: $nome <br>";
     echo "seu nome j? foi inserido";

}else{

echo "<form action=estudo.php action=post>
      Nome: <input type=text name=nome><br>
      <input type=submit name=submit value=yes>";
}
?>"
I does not work in this version.
I had lots of time working trying to find the problem and I solve it when I installed older version of PHP.

Thanks
Lu?s Hess