We have been using VW for many years and have never had a problem launching and running the servcie patches.  However we have tried on two different machine with no luck.  You just type int he administrators password as usual, but nothing happens.   If I understand the tech support reply correctley they suggest uninstallinga and then reinstalling VW again - which I am loath to do as we pay fro IT by the hour, we don't just ahve it installed on 2 machines.   Has anyone else go