I just purchased the 6th generation of Airport Extreme Base Station to connect my Mac mini and a Windows 7 PC via ethernet cable. I had a D-Link DI-604 router to do the job, however the DI-604 does not offer wireless access for my iDevice. I found out that Windows 7 PC has extremely poor internet speed and frequently disconnected itself due to the error of "default gateway"; my Mac mini never had any problem, so do my iDevices. My question is, what should I do to secure the stability of my Windows 7 PC's internet connection and to share files with my Mac? ps. I have installed the latest Airport Utility in my PC.