To use ShipRush select it from the Windows Start menu. ShipRush will
drop to the System Tray
and
will stay there all day until you exit it.
Simply double click on the System Tray icon and ShipRush will pop up with your PayPal transactions listed:


To process a shipment simply select an order and press the Ship button (or double click on an order). ShipRush will pop up, with the Ship To address already filled in:
Simply complete the form and press Ship. 
You are done. Move on to the next order!