How Would I Integrate A Form & The Output Of That Form Into Vbulletin

[pspmodandcfw]

Hello guys i took a look at the thread on How To make Your Own VB Powered Pages but its only for HTML. I need to know how to integrate the following code into vbulletin which includes PHP not just HTML.

Here is the HTML Part:

$Headinclude + $Header

<h4>Tizag Art Supply Order Form</h4>
<form action="market.php?do=order" method="post"> 
<select name="item"> 
<option>Paint</option>
<option>Brushes</option>
<option>Erasers</option>
</select>
Quantity: <input name="quantity" type="text" /> 
<input type="submit" />
</form>
$Footer

Here is the PHP Part:

<?php
$quantity = $_POST['quantity'];
$item = $_POST['item'];

echo "You ordered ". $quantity . " " . $item . ".<br />";
echo "Thank you for ordering from Tizag Art Supplies!";

?>

How would i get the output of that FORM in 1 of my vbulletin pages. For Example The Market.php Page is where the a member selects the options and i already have this done by inserting it in a template however how would i get the output from the PHP into the template so it would be like this on the market.php?do=order page.

$Headinclude + Header

You ordered 6 brushes.
Thank you for ordering from Tizag Art Supplies!

$Footer

Thank You.

--------------- Added [DATE]1246919994[/DATE] at [TIME]1246919994[/TIME] ---------------

NVM guys i took a look at the sendmessage.php file and saw how VB uses it and figured out how to do it.