Before upgrading your PC to Windows Vista (Instruction for Virtual Expander setting)   1.Click “Virtual Expander” icon in the task tray (In case the icon is not in the task tray, please try this action first when you start up PC) 2.Next, check off “Activate upon start-up” to remove Virtual expander from the start-up action at your PC setting.     3.Please click “Virtual Expander” iconagain to confirm checkmark for “Activate upon start-up” are properly off.     4.Restart your PC. 5.Please confirm there is no “Virtual Expander” icon in the task tray. Now get ready to upgrade your PC to Windows Vista.