Undefined Index psp notice

I entered in the below php sample code: <?php echo $_REQUEST['name']; ?> and then run the script. Now I get an error message Notice: Undefined index: name in C:\PHPMySQLMissingCD\PHP_ch01_files\scripts\sayHelloWeb.php

I am calling the correct file on the html side: <form action="scripts/sayHelloWeb.php" method="POST">
When I try to veiw the code through the browser one of two occurs:

1. The html will appear but the php data will not.
2. The html data will appear correctly but when I call the php The following page is source code.

What am I doing wrong? Please respond.