diff --git a/lib/WebGUI/Shop/PayDriver.pm b/lib/WebGUI/Shop/PayDriver.pm
index cd5b85c77..cf931fb09 100644
--- a/lib/WebGUI/Shop/PayDriver.pm
+++ b/lib/WebGUI/Shop/PayDriver.pm
@@ -606,30 +606,42 @@ sub processPropertiesFromFormPost {
 
 #-------------------------------------------------------------------
 
-=head2 processTransaction ( [ paymentAddress ] )
+=head2 processTransaction ( [ object ] )
 
 This method is responsible for handling success or failure from the payment processor, completing or denying the transaction, and sending out notification and receipt emails. Returns a WebGUI::Shop::Transaction object.
 
-=head3 paymentAddress
+=head3 object
 
-A reference to a WebGUI::Shop::Address object that should be attached as payment information. Not required.
+Can be undef, in which case a WebGUI::Shop::Transaction object will be generated using the cart. Can also be a reference to a WebGUI::Shop::Address object that should be attached as payment information to the autogenerated WebGUI::Shop::Transaction. Or can be a WebGUI::Shop::Transaction that you've already constructed and then no transaction will be generated, but rather just updated.
 
 =cut
 
 sub processTransaction {
-    my ($self, $paymentAddress) = @_;
+    my ($self, $object) = @_;
 
     my $cart = $self->getCart;
+    
+    # determine object type
+    my $transaction;
+    my $paymentAddress;
+    if ($object->isa('WebGUI::Shop::Transaction')) {
+        $transaction = $object;
+    }
+    elsif ($object->isa('WebGUI::Shop::Address')) {
+        $paymentAddress = $object;
+    }
 
-    # Setup tranasction properties
-    my $transactionProperties;
-    $transactionProperties->{ paymentMethod     } = $self;
-    $transactionProperties->{ cart              } = $cart;
-    $transactionProperties->{ paymentAddress    } = $paymentAddress if defined $paymentAddress;
-    $transactionProperties->{ isRecurring       } = $cart->requiresRecurringPayment;
-
-    # Create a transaction...
-    my $transaction = WebGUI::Shop::Transaction->create( $self->session, $transactionProperties );
+    # Setup dynamic transaction
+    unless (defined $transaction) {     
+        my $transactionProperties;
+        $transactionProperties->{ paymentMethod     } = $self;
+        $transactionProperties->{ cart              } = $cart;
+        $transactionProperties->{ paymentAddress    } = $paymentAddress if defined $paymentAddress;
+        $transactionProperties->{ isRecurring       } = $cart->requiresRecurringPayment;
+    
+        # Create a transaction...
+        $transaction = WebGUI::Shop::Transaction->create( $self->session, $transactionProperties );
+    }
 
     # And handle the payment for it
     my ($success, $transactionCode, $statusCode, $statusMessage) = $self->processPayment( $transaction );