jQuery Dialog Form and Post Back

I don't know if my brain is fried or what, but I'm trying to do a simple form in a jQuery dialog box that posts the data to a page outside of the dialog.  I can post the information to a page within the dialog just fine, but I want it to post the data to another page and close the dialog.
Form (Displayed in Dialog)

<form method="POST" name="order-search-form" id="order-search-form" action="../orderSearch2.php">
	<fieldset>
		<legend></legend>
		<p>To search for an order, please provide one of the following...</p>
		<label for="order_id">Order ID: </label><input type="text" name="order_id" id="order_id" class="ui-state ui-state-default ui-corner ui-corner-all" />
		<div id="oclear"></div>
		<label for="username">Username: </label><input type="text" name="username" id="username" class="ui-state ui-state-default ui-corner ui-corner-all" />
		<div id="oclear"></div>
		<label for="customer_number">Customer Number: </label><input type="text" name="customer_number" id="customer_number" class="ui-state ui-state-default ui-corner ui-corner-all" />
		<div id="oclear"></div>
	</fieldset>
	<div id="oclear"></div>
	<div id="searchError" class="ui-state-error ui-corner ui-corner-all" style="margin: 10px 0; padding: 2px 7px; display: none;"></div>
</form>

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jQuery Code:

$(document).ready(function() {
	/**
	 * Search For Orders
	 */
	jQuery("#orderSearch").click(function(){
		
		$("#order-search").load('func/orderSearch.php').dialog({
			bgiframe: true,
			autoOpen: true,
			position: 'center',
			title: 'Order Search',
			width: 400,
			height: 400,
			modal: true,
			buttons: {
				'Search': function() {
					var bValid = true;
	
					var order_id = $('#order_id'),
						username = $('#username'),
						customer_number = $('#customer_number');
					
					if (customer_number.val() == "" && username.val() == "" && order_id.val() == ""){
						$('#searchError').fadeIn("slow");
						$('#searchError').html("<p>You must provide an order id, username/email or a customer number to continue.</p>");
						bValid = false;
					}
					
					if (bValid) {
						//arggggg...this is where I can't seem to get it right...
					}
				},
				'Close Window': function() {
					$(this).dialog("destroy");
					
				},
				'Start Over': function() {
					$('#searchError').fadeOut("slow"),
					$('#searchError').html("");
					$("#order-search-form").resetForm();
				}
			},
			close: function() {
				$(this).dialog("destroy");
			}
		});
	});
}); 

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Essentially, if bValid is true, I want to post the data to a another page and close the dialog.  The traditional $.post just pulls the orderSearch2.php page within the dialog.

I know this is simple...I just can't see it right now.