My Secunia Software Inspector advises me that I have two insecure software programs running. When i follow instructions to update I am unsuccessful. In fact, window update tells me I have all the updates required. The patch required for IE 7 is KB942615. The patches required for Windows XP are KB941568, KB941569 and KB944653. How can I successfully update my computer to include these patches? My laptop is a Dell Inspiron 600m.