Hi, I have recently upgraded my pc to windows vista Home Premium,Since the upgrade I have had a few problems.1: When I try to use any of the Microsoft works programmes via the Microsoft task launcher button, or opening a saved document, I get the following message : "Windows cannot access the specified device,path or file. You may not have the appropriate permissions to access this item"This problem occurs for all users, all users are setup as administrators.2: My tv tuner no longer works, I can watch tv progs that I have previously recorded, but the tuner can no longer find tv channels, I have tried tuning via 4 different transmitters, I have checked the Ariel with another TV and all is ok.Please could you advise me of any actions that I can take to rectify this problem?Thanks in anticipation