I configured WPA with mac address based authentication. SSID is not broadcasting. Initially i faced problems with windows wireless drivers. then i upgraded the driver and started working. But for windows vista laptops still we are facing problems with mac address authentication. if i remove the authentication it will work. But xp laptops still working with mac authentication but vista is not. In vista i manually added the macadress of the wireless lan card in the driver details.then it will work. But the customer is saying that its not feasible. please advice