The Bluetooth item in Control Panel on a Windows Vista SP2-based computer does not work as expected when you click the item
When you click the Bluetooth item in Control Panel on a computer that is running Windows Vista Service Pack 2 (SP2), the Bluetooth item does not work as expected. Therefore, you cannot set up a new Bluetooth device. Similarly, you cannot view or edit the settings for an existing Bluetooth device.
This issue occurs if you install third-party Bluetooth software on your computer and then you install Windows Vista SP2.
Note: When this issue occurs, you may have two Bluetooth items in Control Panel. One of these items is the Bluetooth item that was installed by the third-party Bluetooth software, and the other item is the default Bluetooth item for Windows Vista. You should ignore the default Bluetooth item.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB960531.