If you want to show the same form after the processing (Like some data entry work) you can easly do it in a single form also.
refer to the following. The file should be stored as mainpage.php, because i am using that name in the form action.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HEAD><TITLE>Add Main News</TITLE></HEAD>
<BODY>
<H2>This is my form page</H2><HR>
<form name="addmain" action="mainpage.php" method="Post">
<!-- your form here -->
<input name="subm" type="Submit" Value="Add This News">
</form>
<?php
if($subm == "Add This News"){
$connection = mysql_connect($sqlserver,$sqluser,$sqlpassword) or die ("Unable to connect to MySQL server.");
/ your database operation here /
mysql_close($connection);
}
?>
</BODY>
?>