I am having trouble connecting my dad's laptop to my Wireless DIR-615 router. It will get on the wireless network fine but it will not connect to the internet using wireless. I am not sure what I need to try to connect his laptop and I can't think of anything else to try. My laptop and my brothers laptop work fine. His laptop is a Sony Vaio windows vista 32-bit. If anyone could help me that would be great. Thank you.