[Xenon]

first question: hmm, if you include the file it would work, or you can call the script with a command line variable:
script.php?name=blabla

if you call the script through an inputform use this in the form:
<input type="hidden" name="name" value="which name....">

and no, this would be correct:

PHP Code:

if ($submitnewname == "Submit") {
    $sql = "UPDATE yp SET Name='".addslashes($newname)."' WHERE Name='".addslashes($Name)."'"; 


the function is called addslashes