Description:
------------
File name "searchstudent.php" contains a form that calls itself upon submission to enter the form data into a database.  

Problem : instead of submiting Form variables, page refreshes itself.  

Code works on a Windows 2000 Pro IIS / PHP 4.0.4 server but not on an Apache with PHP 4.3.4, nor on a Windows 2000 / PHP 4.3.5.  Is there something in the php.ini file I should be made aware of?

Reproduce code:
---------------
<? if (isset($Submit)
   { 
      // UPDATE DATABASE WITH FORM Values
   }
else
{
<?
<form method="post" action="searchstudent.php">
..
..
<input type="submit" name="Submit" value="Search">
</form>

<?
}
?>

Expected result:
----------------
Expected result is a successful submission of the form.

Actual result:
--------------
Actual result, page refreshes with empty textfield, etc.