I have above card in my Intel Core 2 Duo E6400 Windows XP SP3 and the configuration software, so far so good. I would like the card from other devices cannot be found. For this purpose I have in the "BT Configuration" under "Accessibility" the check in the "Let other devices discover this computer." removed. When I re-start the laptop now, the hook is set again. Can connected with the BT keyboard and mouse from Dell, but not really? How do I get the card always invisible?