I have Time Warner Cable with an Arris modem (provided by TW) and an old Dell Demension, connected via ethernet. Last June I bought a MacBook and Airport Extreme and everything was connected fine and running smoothly on the wireless network. Recently, I had an issue where all of a sudden my wireless printer that is not connected to the Airport would not get a connection. After days of trying to figure it all out, I simple rebooted everything from the modem up and things worked great! My husband recently imformed me that his new Blackberry Bold could no longer connect to our wireless network, as it could not find a valid IP address. All of this is around the same time I had printer issues. I told him since the macbook and my iphone connected just fine that it must be a BB issue. Tonight my mom tries to connect her dell laptop and while it finds the network, we get the error that there is limited or no connetivity. So I start messing around with the router and the airport settings and end up losing my internet connection to my desktop as well as my iphone. I have read some on the internet and see that my airport is picking up the 169 ISP (which I know is not correct). Also I have noticed that I have no DNS settings (which I assume is related to the ISP). I have also though received an email from Time Warner about the DNS hacking. I connected the ethernet directly to the desktop and it worked great. Thus, the router must be working correctly. I have noticed that when I connect via the airport that the ethernet light on the desktop is not as bright. So that makes me think that i need a new ethernet cable which will maybe get the router and the modem talking and get rid of the bad ISP and get everything back on track. However, what confuses me in the whole situation and makes me doubt that it is the ethernet cable is Why Have I never lost my wireless internet connection on my macbook? and why now have I lost my iPhone wifi connection. I don't know much about all of these, but I have picked up enough on the internet to somewhat make an educated guess. Am I anywhere on track with this. Can someone guide me in the direction of starting with my modem (is this related to the TW hacking), the airport, or just go purchase a new ethernet cable! Thanks in advance!