[thailen]

My ex-girl friend had a PC which we were able to connect to the Internet via a wi-fi system in or condo building. My PC(Windows 7-64bi)t, connects to the Internet via a cable modem. I bought a router and connected the cable from the modem to the router and a cable from the router to my PC. Everything worked fine; she had no trouble getting the Internet thru Wi-fi. Then we split up and I removed the router cable and plugged the cable directly into my PC from the modem. Again, no problem.
I recently bought another PC(a Netbook, like hers was) and reconnected the cables as they were before she left. But I couldn't get the cable modem to connect to the Internet. It's only when I disconnect the cable from the router that I get an Internet connection. In the Control Panel, under Network and Sharing Center, I see the Wi-fi is connected to my floor's Wi-fi, but the SBN(cable modem) which my PC connects to the Internet with, is X'd out.
I need to know what steps to take to connect me to both networks.